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Finding the Fourth Proportional to 5,780.59, 7,977.17 and 3,127.97

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Solution

The fourth proportional to 5,780.59, 7,977.17 and 3,127.97 is: 4,316.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780.59 : 7,977.17 = 3,127.97 : x
  2. Step 2: Convert to fraction form
    5,780.59/7,977.17 = 3,127.97/x
  3. Step 3: Cross multiply
    5,780.59x = 7,977.17 × 3,127.97
  4. Step 4: Simplify right side
    5,780.59x = 24,952,376.21
  5. Step 5: Solve for x
    x = 24,952,376.21/5,780.59
  6. Step 6: Final answer
    x = 4,316.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.