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Finding the Fourth Proportional to 8,691.67, 13,037.10 and 3,493.90

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Solution

The fourth proportional to 8,691.67, 13,037.10 and 3,493.90 is: 5,240.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,691.67 : 13,037.10 = 3,493.90 : x
  2. Step 2: Convert to fraction form
    8,691.67/13,037.10 = 3,493.90/x
  3. Step 3: Cross multiply
    8,691.67x = 13,037.10 × 3,493.90
  4. Step 4: Simplify right side
    8,691.67x = 45,550,323.69
  5. Step 5: Solve for x
    x = 45,550,323.69/8,691.67
  6. Step 6: Final answer
    x = 5,240.69

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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.