The ratio of the side lengths of a triangle is 2:3:4. The shortest side is 15 inches. What is the perimeter? Explain.

Verified Answer :

Answer:

The perimeter is equal to \(67.5\ in\)

Step-by-step explanation:

In this problem we have a ratio of three numbers

\(2:3:4\)

Let

x------> the first side (shortest side)

y------> the second side

z------> the third side

we know that

\(\frac{x}{y}=\frac{2}{3}\) --> \(y=\frac{3}{2}x=1.5x\) ----> equation A

\(\frac{x}{z}=\frac{2}{4}\) ---> \(z=\frac{4}{2}x=2x\) -----> equation B

\(x=15\ in\)

Substitute the value of x in the equation A and equation B

\(y=1.5(15)=22.5\ in\)

\(z=2(15)=30\ in\)

Find the perimeter of triangle

Remember that the perimeter is equal to the sum of the length sides

\(P=x+y+z=15+22.5+30=67.5\ in\)