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Step-4

Title: Ratio & Proportion

Grade: 8-a Lesson: S2-L8

Explanation: Hello Students, time to practice and review the steps for the problem.

Lesson Steps

Step	Type	Explanation	Answer
1	Problem	Find the fourth proportion to 5 , 10 and 12.
2	Step	Let us take the third proportion is	\$x\$
3	Step	We can write the above numbers in the proportional form (a : b :: c : d)	\$5 : 10 :: 12 : x\$
4	Hint	\$a/b :: c/d\$
5	Step	Here a = 5 , b = 10 ,c = 12 & d = x
6	Step	Let us find the x value.	x = \$ (10 \times 12)/5\$ x = \$24\$
7		Answer	B

Step

Type

Explanation

Answer

Problem

Find the fourth proportion to 5 , 10 and 12.

Step

Let us take the third proportion is

\$x\$

Step

We can write the above numbers in the proportional form
(a : b :: c : d)

\$5 : 10 :: 12 : x\$

Hint

\$a/b :: c/d\$

Step

Here a = 5 , b = 10 ,c = 12 & d = x

Step

Let us find the x value.

x = \$ (10 \times 12)/5\$
x = \$24\$

Answer