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Finding the Fourth Proportional to 8,238.25, 12,356.06 and 2,691.55

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Solution

The fourth proportional to 8,238.25, 12,356.06 and 2,691.55 is: 4,036.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,238.25 : 12,356.06 = 2,691.55 : x
  2. Step 2: Convert to fraction form
    8,238.25/12,356.06 = 2,691.55/x
  3. Step 3: Cross multiply
    8,238.25x = 12,356.06 × 2,691.55
  4. Step 4: Simplify right side
    8,238.25x = 33,256,953.29
  5. Step 5: Solve for x
    x = 33,256,953.29/8,238.25
  6. Step 6: Final answer
    x = 4,036.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.