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Finding the Fourth Proportional to 8,769.76, 13,163.04 and 5,489.44

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Solution

The fourth proportional to 8,769.76, 13,163.04 and 5,489.44 is: 8,239.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,769.76 : 13,163.04 = 5,489.44 : x
  2. Step 2: Convert to fraction form
    8,769.76/13,163.04 = 5,489.44/x
  3. Step 3: Cross multiply
    8,769.76x = 13,163.04 × 5,489.44
  4. Step 4: Simplify right side
    8,769.76x = 72,257,718.30
  5. Step 5: Solve for x
    x = 72,257,718.30/8,769.76
  6. Step 6: Final answer
    x = 8,239.42

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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.