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Finding the Fourth Proportional to 5,979.36, 8,957.88 and 4,331.88

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Solution

The fourth proportional to 5,979.36, 8,957.88 and 4,331.88 is: 6,489.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,979.36 : 8,957.88 = 4,331.88 : x
  2. Step 2: Convert to fraction form
    5,979.36/8,957.88 = 4,331.88/x
  3. Step 3: Cross multiply
    5,979.36x = 8,957.88 × 4,331.88
  4. Step 4: Simplify right side
    5,979.36x = 38,804,461.21
  5. Step 5: Solve for x
    x = 38,804,461.21/5,979.36
  6. Step 6: Final answer
    x = 6,489.73

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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.