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Finding the Fourth Proportional to 2,473.52, 3,711.12 and 742.40

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Solution

The fourth proportional to 2,473.52, 3,711.12 and 742.40 is: 1,113.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,473.52 : 3,711.12 = 742.40 : x
  2. Step 2: Convert to fraction form
    2,473.52/3,711.12 = 742.40/x
  3. Step 3: Cross multiply
    2,473.52x = 3,711.12 × 742.40
  4. Step 4: Simplify right side
    2,473.52x = 2,755,135.49
  5. Step 5: Solve for x
    x = 2,755,135.49/2,473.52
  6. Step 6: Final answer
    x = 1,113.85

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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.