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Finding the Fourth Proportional to 5,891.47, 8,124.20 and 3,901.30

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Solution

The fourth proportional to 5,891.47, 8,124.20 and 3,901.30 is: 5,379.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,891.47 : 8,124.20 = 3,901.30 : x
  2. Step 2: Convert to fraction form
    5,891.47/8,124.20 = 3,901.30/x
  3. Step 3: Cross multiply
    5,891.47x = 8,124.20 × 3,901.30
  4. Step 4: Simplify right side
    5,891.47x = 31,694,916.27
  5. Step 5: Solve for x
    x = 31,694,916.27/5,891.47
  6. Step 6: Final answer
    x = 5,379.80

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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.