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Finding the Fourth Proportional to 8,538.52, 12,807.78 and 2,382.52

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Solution

The fourth proportional to 8,538.52, 12,807.78 and 2,382.52 is: 3,573.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,538.52 : 12,807.78 = 2,382.52 : x
  2. Step 2: Convert to fraction form
    8,538.52/12,807.78 = 2,382.52/x
  3. Step 3: Cross multiply
    8,538.52x = 12,807.78 × 2,382.52
  4. Step 4: Simplify right side
    8,538.52x = 30,514,792.01
  5. Step 5: Solve for x
    x = 30,514,792.01/8,538.52
  6. Step 6: Final answer
    x = 3,573.78

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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.