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Finding the Fourth Proportional to 8,250.20, 12,379.56 and 3,868.10

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Solution

The fourth proportional to 8,250.20, 12,379.56 and 3,868.10 is: 5,804.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,250.20 : 12,379.56 = 3,868.10 : x
  2. Step 2: Convert to fraction form
    8,250.20/12,379.56 = 3,868.10/x
  3. Step 3: Cross multiply
    8,250.20x = 12,379.56 × 3,868.10
  4. Step 4: Simplify right side
    8,250.20x = 47,885,376.04
  5. Step 5: Solve for x
    x = 47,885,376.04/8,250.20
  6. Step 6: Final answer
    x = 5,804.15

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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.