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Finding the Fourth Proportional to 8,951.76, 13,404.80 and 7,487.28

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Solution

The fourth proportional to 8,951.76, 13,404.80 and 7,487.28 is: 11,211.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,951.76 : 13,404.80 = 7,487.28 : x
  2. Step 2: Convert to fraction form
    8,951.76/13,404.80 = 7,487.28/x
  3. Step 3: Cross multiply
    8,951.76x = 13,404.80 × 7,487.28
  4. Step 4: Simplify right side
    8,951.76x = 100,365,490.94
  5. Step 5: Solve for x
    x = 100,365,490.94/8,951.76
  6. Step 6: Final answer
    x = 11,211.82

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1.5x scale

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.