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Finding the Fourth Proportional to 8,239.56, 12,359.79 and 2,694.60

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Solution

The fourth proportional to 8,239.56, 12,359.79 and 2,694.60 is: 4,042.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,239.56 : 12,359.79 = 2,694.60 : x
  2. Step 2: Convert to fraction form
    8,239.56/12,359.79 = 2,694.60/x
  3. Step 3: Cross multiply
    8,239.56x = 12,359.79 × 2,694.60
  4. Step 4: Simplify right side
    8,239.56x = 33,304,690.13
  5. Step 5: Solve for x
    x = 33,304,690.13/8,239.56
  6. Step 6: Final answer
    x = 4,042.05

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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.