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Finding the Fourth Proportional to 8,985.29, 13,487.52 and 7,951.87

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Solution

The fourth proportional to 8,985.29, 13,487.52 and 7,951.87 is: 11,936.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,985.29 : 13,487.52 = 7,951.87 : x
  2. Step 2: Convert to fraction form
    8,985.29/13,487.52 = 7,951.87/x
  3. Step 3: Cross multiply
    8,985.29x = 13,487.52 × 7,951.87
  4. Step 4: Simplify right side
    8,985.29x = 107,250,938.22
  5. Step 5: Solve for x
    x = 107,250,938.22/8,985.29
  6. Step 6: Final answer
    x = 11,936.28

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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.