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Finding the Fourth Proportional to 8,753.78, 13,125.39 and 3,489.60

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Solution

The fourth proportional to 8,753.78, 13,125.39 and 3,489.60 is: 5,232.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,753.78 : 13,125.39 = 3,489.60 : x
  2. Step 2: Convert to fraction form
    8,753.78/13,125.39 = 3,489.60/x
  3. Step 3: Cross multiply
    8,753.78x = 13,125.39 × 3,489.60
  4. Step 4: Simplify right side
    8,753.78x = 45,802,360.94
  5. Step 5: Solve for x
    x = 45,802,360.94/8,753.78
  6. Step 6: Final answer
    x = 5,232.30

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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.