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Finding the Fourth Proportional to 8,951.87, 12,342.22 and 6,402.70

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Solution

The fourth proportional to 8,951.87, 12,342.22 and 6,402.70 is: 8,827.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.87 : 12,342.22 = 6,402.70 : x
  2. Step 2: Convert to fraction form
    8,951.87/12,342.22 = 6,402.70/x
  3. Step 3: Cross multiply
    8,951.87x = 12,342.22 × 6,402.70
  4. Step 4: Simplify right side
    8,951.87x = 79,023,470.28
  5. Step 5: Solve for x
    x = 79,023,470.28/8,951.87
  6. Step 6: Final answer
    x = 8,827.60

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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.