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Finding the Fourth Proportional to 8,876.56, 13,310.48 and 5,179.68

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Solution

The fourth proportional to 8,876.56, 13,310.48 and 5,179.68 is: 7,766.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,876.56 : 13,310.48 = 5,179.68 : x
  2. Step 2: Convert to fraction form
    8,876.56/13,310.48 = 5,179.68/x
  3. Step 3: Cross multiply
    8,876.56x = 13,310.48 × 5,179.68
  4. Step 4: Simplify right side
    8,876.56x = 68,944,027.05
  5. Step 5: Solve for x
    x = 68,944,027.05/8,876.56
  6. Step 6: Final answer
    x = 7,766.98

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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.