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Finding the Fourth Proportional to 8,879.20, 13,318.80 and 3,035.86

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Solution

The fourth proportional to 8,879.20, 13,318.80 and 3,035.86 is: 4,553.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,879.20 : 13,318.80 = 3,035.86 : x
  2. Step 2: Convert to fraction form
    8,879.20/13,318.80 = 3,035.86/x
  3. Step 3: Cross multiply
    8,879.20x = 13,318.80 × 3,035.86
  4. Step 4: Simplify right side
    8,879.20x = 40,433,945.57
  5. Step 5: Solve for x
    x = 40,433,945.57/8,879.20
  6. Step 6: Final answer
    x = 4,553.79

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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.