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Finding the Fourth Proportional to 8,265.68, 12,402.05 and 4,319.90

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Solution

The fourth proportional to 8,265.68, 12,402.05 and 4,319.90 is: 6,481.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,265.68 : 12,402.05 = 4,319.90 : x
  2. Step 2: Convert to fraction form
    8,265.68/12,402.05 = 4,319.90/x
  3. Step 3: Cross multiply
    8,265.68x = 12,402.05 × 4,319.90
  4. Step 4: Simplify right side
    8,265.68x = 53,575,578.69
  5. Step 5: Solve for x
    x = 53,575,578.69/8,265.68
  6. Step 6: Final answer
    x = 6,481.69

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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.