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Finding the Fourth Proportional to 8,672.32, 13,010.44 and 3,407.86

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Solution

The fourth proportional to 8,672.32, 13,010.44 and 3,407.86 is: 5,112.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.32 : 13,010.44 = 3,407.86 : x
  2. Step 2: Convert to fraction form
    8,672.32/13,010.44 = 3,407.86/x
  3. Step 3: Cross multiply
    8,672.32x = 13,010.44 × 3,407.86
  4. Step 4: Simplify right side
    8,672.32x = 44,337,758.06
  5. Step 5: Solve for x
    x = 44,337,758.06/8,672.32
  6. Step 6: Final answer
    x = 5,112.56

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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.