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Finding the Fourth Proportional to 8,672.79, 12,999.31 and 3,672.04

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Solution

The fourth proportional to 8,672.79, 12,999.31 and 3,672.04 is: 5,503.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.79 : 12,999.31 = 3,672.04 : x
  2. Step 2: Convert to fraction form
    8,672.79/12,999.31 = 3,672.04/x
  3. Step 3: Cross multiply
    8,672.79x = 12,999.31 × 3,672.04
  4. Step 4: Simplify right side
    8,672.79x = 47,733,986.29
  5. Step 5: Solve for x
    x = 47,733,986.29/8,672.79
  6. Step 6: Final answer
    x = 5,503.88

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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.