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Finding the Fourth Proportional to 8,679.83, 13,022.46 and 3,751.79

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Solution

The fourth proportional to 8,679.83, 13,022.46 and 3,751.79 is: 5,628.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,679.83 : 13,022.46 = 3,751.79 : x
  2. Step 2: Convert to fraction form
    8,679.83/13,022.46 = 3,751.79/x
  3. Step 3: Cross multiply
    8,679.83x = 13,022.46 × 3,751.79
  4. Step 4: Simplify right side
    8,679.83x = 48,857,470.09
  5. Step 5: Solve for x
    x = 48,857,470.09/8,679.83
  6. Step 6: Final answer
    x = 5,628.85

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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.