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Finding the Fourth Proportional to 8,979.52, 13,471.98 and 5,425.60

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Solution

The fourth proportional to 8,979.52, 13,471.98 and 5,425.60 is: 8,140.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,979.52 : 13,471.98 = 5,425.60 : x
  2. Step 2: Convert to fraction form
    8,979.52/13,471.98 = 5,425.60/x
  3. Step 3: Cross multiply
    8,979.52x = 13,471.98 × 5,425.60
  4. Step 4: Simplify right side
    8,979.52x = 73,093,574.69
  5. Step 5: Solve for x
    x = 73,093,574.69/8,979.52
  6. Step 6: Final answer
    x = 8,140.03

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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.