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Finding the Fourth Proportional to 5,989.80, 8,979.17 and 3,061.65

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Solution

The fourth proportional to 5,989.80, 8,979.17 and 3,061.65 is: 4,589.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,989.80 : 8,979.17 = 3,061.65 : x
  2. Step 2: Convert to fraction form
    5,989.80/8,979.17 = 3,061.65/x
  3. Step 3: Cross multiply
    5,989.80x = 8,979.17 × 3,061.65
  4. Step 4: Simplify right side
    5,989.80x = 27,491,060.52
  5. Step 5: Solve for x
    x = 27,491,060.52/5,989.80
  6. Step 6: Final answer
    x = 4,589.65

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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.