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Finding the Fourth Proportional to 8,387.52, 12,581.52 and 3,770.52

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Solution

The fourth proportional to 8,387.52, 12,581.52 and 3,770.52 is: 5,655.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,387.52 : 12,581.52 = 3,770.52 : x
  2. Step 2: Convert to fraction form
    8,387.52/12,581.52 = 3,770.52/x
  3. Step 3: Cross multiply
    8,387.52x = 12,581.52 × 3,770.52
  4. Step 4: Simplify right side
    8,387.52x = 47,438,872.79
  5. Step 5: Solve for x
    x = 47,438,872.79/8,387.52
  6. Step 6: Final answer
    x = 5,655.89

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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.