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Finding the Fourth Proportional to 8,696.70, 11,997.72 and 5,865.90

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Solution

The fourth proportional to 8,696.70, 11,997.72 and 5,865.90 is: 8,092.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,696.70 : 11,997.72 = 5,865.90 : x
  2. Step 2: Convert to fraction form
    8,696.70/11,997.72 = 5,865.90/x
  3. Step 3: Cross multiply
    8,696.70x = 11,997.72 × 5,865.90
  4. Step 4: Simplify right side
    8,696.70x = 70,377,425.75
  5. Step 5: Solve for x
    x = 70,377,425.75/8,696.70
  6. Step 6: Final answer
    x = 8,092.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.