2/1 = 4/x, Solve for x

Solve 2/1 = 4/x

How to solve 2/1 = 4/x? Get the answer and stepwise instruction to solve linear equation in one variable 𝒙.

We have 2/1 = 4/x

Cross multiplying the ratios, gives

2x = 1 × 4

Divide both sides by 2, which is the coefficient of x
Note: if a = b, then a ÷ c = b ÷ c

Therefore, 2x/2 = 1 × 4/2

x = 4/2

To simplify, divide both numerator and denominator by 2, which is the GCF of 4 and 2:

x = 2/1 or, x = 2