Question

What is the solution of the proportion 3/5=13/x ? Round to the nearest tenth if necessary.

Answer 1

Answer: x = 21 2/3

Explanation:

3/5 = 13/x

cross multiply 5 × 13, then divide by 3.

65/3 = 21 2/3

It's like multiplying both sides by the reciprocal of the left side.