## Prealgebra (7th Edition)

Write a proportion. Height is to height as length is to length. $\frac{x}{25}=\frac{40}{2}$ $\longrightarrow$cross multiply to solve for x $2x=40\times25$ $\longrightarrow$multiply $2x=1000$ $\longrightarrow$multiplication property of equality $2x\div2=1000\div2$ $\longrightarrow$divide $x=500$