Ubi per exploratores Caesar certior factus est tres iam partes copiarum Helvetios id flumen traduxisse, quartam vero partem citra flumen Ararim reli

[SpeedPocok5]

] Ubi per exploratores Caesar certior factus est tres iam partes copiarum Helvetios id flumen traduxisse, quartam fere partem citra flumen Ararim reliquam esse , de tertia vigilia cum legionibus tribus e castris profectus ad eam partem pervenit quae nondum flumen transierat.

Well, the part quartam fere partem citra flumen Ararim reliquam esse, that I translated it to: but that the four part nearly was left behind on this side of the Saone...

 

[Pacifica]

That's pretty much correct. Just "about the fourth part" would be better than "the four part nearly".

 

[Bitmap]

Ninja'd.

 

[SpeedPocok5]

Ubi per exploratores Caesar certior factus est tres iam partes copiarum Helvetios id flumen traduxisse, quartam fere partem citra flumen Ararim reliquam esse , de tertia vigilia cum legionibus tribus e castris profectus ad eam partem pervenit quae nondum flumen transierat.

In this part, de tertia vigilia cum legionibus tribus, here I don't understand why tribus isn't in ablative like legionibus, what case is tribus?

 

[Bitmap]

Ablative.

 

[Pacifica]

Tribus is in the ablative.

 

[SpeedPocok5]

Ablative.

Tribus is in the ablative.

Why?

Edit: I understand, nothing to say, thanks guys

 

[SpeedPocok5]

2] Ubi per exploratores Caesar certior factus est tres iam partes copiarum Helvetios id flumen traduxisse, quartam vero partem citra flumen Ararim reliquam esse, de tertia vigilia cum legionibus tribus e castris profectus ad eam partem pervenit quae nondum flumen transierat.

"ad eam partem pervenit quae nondum flumen transierat."

I translated it as: he came into this part, which has crossed the river

Well this one it's awkward

 

[Pacifica]

- Eam would translate better as "that" or even just "the" here.

- Ad means "to" rather than "into" (which would be in).

- Transierat is pluperfect so "had crossed".

- Last but not least, you failed to translate nondum, which changes the meaning entirely.

 

[SpeedPocok5]

- Eam would translate better as "that" or even just "the" here.

- Ad means "to" rather than "into" (which would be in).

- Transierat is pluperfect so "had crossed".

- Last but not least, you failed to translate nondum, which changes the meaning entirely.

and came up to that (?) Which had not yet crossed the river.

 

[Pacifica]

"Part" was a correct translation for partem.

 

[SpeedPocok5]

"Part" was a correct translation for partem.

But does it make sense?

For me this sentence doesn't make sense, who don't cross the river? Cesar?

Maybe, partem could mean another thing here?

 

[Bitmap]

a part of the army (about one fourth) had not yet crossed the river (as you had more or less correctly translated in your original post).