Question

Solve the proportion below.4/9 = x/54

Answer 1

We have the proportion:

$\frac{4}{9}=\frac{x}{54}$

We can cross the denominator in each side as a product to the other side of the equality as:

$4\cdot54=x\cdot9$

Then, we can solve for x:

$\begin{gathered} 4\cdot54=x\cdot9 \\ x=4\cdot\frac{54}{9} \\ x=4\cdot6 \\ x=24 \end{gathered}$

Answer: x=24

NOTE: in this case, I put the 9 again as denominator because 54/9 is a easy to calculate quotient without calculator.