Question

Two quantities are proportional if their ___ are equal.

A) numerator
B) denominators
C) cross products

Answer 1

C) cross products

Explanation:

Let's say you were solving
`(1)/(2)=(x)/(4)` for example. You would need to use cross products to simplify the problem. Here, the left side would be 1*4, and the right side would be 2*x, giving you
`4=2x`, thus, leading to the solution
`x=2`. We can see clearly that the cross products would thus need to be equal to each other.