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Finding the Fourth Proportional to 6,385.57, 8,812.13 and 3,732.47

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Solution

The fourth proportional to 6,385.57, 8,812.13 and 3,732.47 is: 5,150.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,385.57 : 8,812.13 = 3,732.47 : x
  2. Step 2: Convert to fraction form
    6,385.57/8,812.13 = 3,732.47/x
  3. Step 3: Cross multiply
    6,385.57x = 8,812.13 × 3,732.47
  4. Step 4: Simplify right side
    6,385.57x = 32,890,981.18
  5. Step 5: Solve for x
    x = 32,890,981.18/6,385.57
  6. Step 6: Final answer
    x = 5,150.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.