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Finding the Fourth Proportional to 11,489.86, 17,234.34 and 3,281.86

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Solution

The fourth proportional to 11,489.86, 17,234.34 and 3,281.86 is: 4,922.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,489.86 : 17,234.34 = 3,281.86 : x
  2. Step 2: Convert to fraction form
    11,489.86/17,234.34 = 3,281.86/x
  3. Step 3: Cross multiply
    11,489.86x = 17,234.34 × 3,281.86
  4. Step 4: Simplify right side
    11,489.86x = 56,560,691.07
  5. Step 5: Solve for x
    x = 56,560,691.07/11,489.86
  6. Step 6: Final answer
    x = 4,922.66

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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.