What gear ratio is this?

[RShaips]

I bought a rear and front axle assembly from a guy and it was supposed to be from a 79 1/2 ton with 3.73 gears. I checked the ratio by spinning one tire one revolution and times it by 2 and the front and back came out as 3.73, at least that's what I thought! Well I take the rear apart and the ring gear is stamped 10.34. And i counted them and that's what it is. 3.40 gears? I have heard of 3.42 but 3.40?