16/28 = 4/x, Solve for x

Solve 16/28 = 4/x

How to solve 16/28 = 4/x? Get the answer and stepwise instruction to solve linear equation in one variable 𝒙.

We have 16/28 = 4/x

Cross multiplying the ratios, gives

16x = 28 × 4

Divide both sides by 16, which is the coefficient of x
Note: if a = b, then a ÷ c = b ÷ c

Therefore, 16x/16 = 28 × 4/16

x = 112/16

To simplify, divide both numerator and denominator by 16, which is the GCF of 112 and 16:

x = 7/1 or, x = 7