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Finding the Fourth Proportional to 8,469.88, 11,687.34 and 4,743.88

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Solution

The fourth proportional to 8,469.88, 11,687.34 and 4,743.88 is: 6,545.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,469.88 : 11,687.34 = 4,743.88 : x
  2. Step 2: Convert to fraction form
    8,469.88/11,687.34 = 4,743.88/x
  3. Step 3: Cross multiply
    8,469.88x = 11,687.34 × 4,743.88
  4. Step 4: Simplify right side
    8,469.88x = 55,443,338.48
  5. Step 5: Solve for x
    x = 55,443,338.48/8,469.88
  6. Step 6: Final answer
    x = 6,545.94

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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.