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Finding the Fourth Proportional to 8,861.66, 13,278.06 and 5,167.02

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Solution

The fourth proportional to 8,861.66, 13,278.06 and 5,167.02 is: 7,742.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.66 : 13,278.06 = 5,167.02 : x
  2. Step 2: Convert to fraction form
    8,861.66/13,278.06 = 5,167.02/x
  3. Step 3: Cross multiply
    8,861.66x = 13,278.06 × 5,167.02
  4. Step 4: Simplify right side
    8,861.66x = 68,608,001.58
  5. Step 5: Solve for x
    x = 68,608,001.58/8,861.66
  6. Step 6: Final answer
    x = 7,742.12

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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.