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Finding the Fourth Proportional to 8,997.78, 12,432.17 and 6,474.90

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Solution

The fourth proportional to 8,997.78, 12,432.17 and 6,474.90 is: 8,946.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,997.78 : 12,432.17 = 6,474.90 : x
  2. Step 2: Convert to fraction form
    8,997.78/12,432.17 = 6,474.90/x
  3. Step 3: Cross multiply
    8,997.78x = 12,432.17 × 6,474.90
  4. Step 4: Simplify right side
    8,997.78x = 80,497,025.16
  5. Step 5: Solve for x
    x = 80,497,025.16/8,997.78
  6. Step 6: Final answer
    x = 8,946.32

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Half scale
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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.