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Finding the Fourth Proportional to 8,442.79, 12,664.19 and 2,202.79

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Solution

The fourth proportional to 8,442.79, 12,664.19 and 2,202.79 is: 3,304.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,442.79 : 12,664.19 = 2,202.79 : x
  2. Step 2: Convert to fraction form
    8,442.79/12,664.19 = 2,202.79/x
  3. Step 3: Cross multiply
    8,442.79x = 12,664.19 × 2,202.79
  4. Step 4: Simplify right side
    8,442.79x = 27,896,540.08
  5. Step 5: Solve for x
    x = 27,896,540.08/8,442.79
  6. Step 6: Final answer
    x = 3,304.19

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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.