Finding the Fourth Proportional to 7,126.11, 10,687.63 and 2,742.75
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Solution
The fourth proportional to 7,126.11, 10,687.63 and 2,742.75 is: 4,113.53
Step by Step Solution
- Step 1: Write the proportion equation
7,126.11 : 10,687.63 = 2,742.75 : x - Step 2: Convert to fraction form
7,126.11/10,687.63 = 2,742.75/x - Step 3: Cross multiply
7,126.11x = 10,687.63 × 2,742.75 - Step 4: Simplify right side
7,126.11x = 29,313,497.18 - Step 5: Solve for x
x = 29,313,497.18/7,126.11 - Step 6: Final answer
x = 4,113.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.