Name ______________________________________ Class ______________________ Date _____________
Practice 11-4 Write a Proportion
Write a proportion and find the value of each x.
1. nKLM , nNPQ
x
K
2. nRST , nRPQ
L
2m
M 17 m
T
P
32 in.
60 in.
S
8m
x
P
R
48 in.
N
Q
x
17
Proportion:
Q
5 28
x5
4. nUVW , nUYZ
U
A
12 ft
9 cm
B
21 ft
Proportion:
5 32
48
x5
3. nABC , nADE
D
x
60
Proportion:
C
x
x
12
W
V
x
5 cm
Y
E
49 ft
15 cm
5 49
21
Z
x 1 9
9
Proportion:
x5
Solve. Show the proportion you use.
5. A surveyor needs to find the distance across a canyon.
She finds a tree on the edge of the canyon and a large
rock on the other edge. The surveyor uses stakes to set
up the similar right triangles shown. Find the distance
across the canyon, x.
15
x
24 5 x 1 12
12 ft
24 ft
15 ft
6. Three cartons of juice cost $4.77. Find the cost of 8 cartons.
3
8
4.77 5 x
7. If a pizza with a diameter of 12 inches costs $10.99, based on area, how
much should a 15-inch pizza cost?
10.99
x
113.04 5 176.625
Pre-Algebra Chapter 11
4
x
© Prentice-Hall, Inc. All rights reserved.
x5
5 20
15