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Finding the Fourth Proportional to 8,255.44, 12,382.44 and 3,321.91

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Solution

The fourth proportional to 8,255.44, 12,382.44 and 3,321.91 is: 4,982.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,255.44 : 12,382.44 = 3,321.91 : x
  2. Step 2: Convert to fraction form
    8,255.44/12,382.44 = 3,321.91/x
  3. Step 3: Cross multiply
    8,255.44x = 12,382.44 × 3,321.91
  4. Step 4: Simplify right side
    8,255.44x = 41,133,351.26
  5. Step 5: Solve for x
    x = 41,133,351.26/8,255.44
  6. Step 6: Final answer
    x = 4,982.58

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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.