Question

a scale drawing of mandys bedroom window is shown below.
if 2 inches on the scale drawing equal 3 feet on the real window, what is the actual length of the window?
answer
i
feet

Explanation:

Step1: Set up proportion

Let $x$ be the actual length of the window. The proportion is $\frac{2}{3}=\frac{2.6}{x}$.

Step2: Cross - multiply

$2x = 3\times2.6$.

Step3: Calculate the right - hand side

$3\times2.6 = 7.8$, so $2x=7.8$.

Step4: Solve for $x$

$x=\frac{7.8}{2}=3.9$.

Answer:

$3.9$