Finding the Fourth Proportional to 2,092.21, 3,138.45 and 631.42
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Solution
The fourth proportional to 2,092.21, 3,138.45 and 631.42 is: 947.17
Step by Step Solution
- Step 1: Write the proportion equation
2,092.21 : 3,138.45 = 631.42 : x - Step 2: Convert to fraction form
2,092.21/3,138.45 = 631.42/x - Step 3: Cross multiply
2,092.21x = 3,138.45 × 631.42 - Step 4: Simplify right side
2,092.21x = 1,981,680.10 - Step 5: Solve for x
x = 1,981,680.10/2,092.21 - Step 6: Final answer
x = 947.17
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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.