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Finding the Fourth Proportional to 8,793.60, 12,140.82 and 7,847.76

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Solution

The fourth proportional to 8,793.60, 12,140.82 and 7,847.76 is: 10,834.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,793.60 : 12,140.82 = 7,847.76 : x
  2. Step 2: Convert to fraction form
    8,793.60/12,140.82 = 7,847.76/x
  3. Step 3: Cross multiply
    8,793.60x = 12,140.82 × 7,847.76
  4. Step 4: Simplify right side
    8,793.60x = 95,278,241.56
  5. Step 5: Solve for x
    x = 95,278,241.56/8,793.60
  6. Step 6: Final answer
    x = 10,834.95

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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.