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Finding the Fourth Proportional to 8,778.60, 13,167.87 and 2,935.20

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Solution

The fourth proportional to 8,778.60, 13,167.87 and 2,935.20 is: 4,402.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,778.60 : 13,167.87 = 2,935.20 : x
  2. Step 2: Convert to fraction form
    8,778.60/13,167.87 = 2,935.20/x
  3. Step 3: Cross multiply
    8,778.60x = 13,167.87 × 2,935.20
  4. Step 4: Simplify right side
    8,778.60x = 38,650,332.02
  5. Step 5: Solve for x
    x = 38,650,332.02/8,778.60
  6. Step 6: Final answer
    x = 4,402.79

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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.