Terms containing A is to B as C is to D

Subject	English	Russian
tech.	A is to B as C is to D	А относится к Б, как В относится к Г
Makarov.	A is to B as C is to D	A относится к B, как C относится к D
math.	segments of lengths a, b, c, and d are said to be proportional if a is to b as c is to d	пропорциональные отрезки