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Finding the Fourth Proportional to 8,399.40, 12,604.80 and 3,469.02

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Solution

The fourth proportional to 8,399.40, 12,604.80 and 3,469.02 is: 5,205.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,399.40 : 12,604.80 = 3,469.02 : x
  2. Step 2: Convert to fraction form
    8,399.40/12,604.80 = 3,469.02/x
  3. Step 3: Cross multiply
    8,399.40x = 12,604.80 × 3,469.02
  4. Step 4: Simplify right side
    8,399.40x = 43,726,303.30
  5. Step 5: Solve for x
    x = 43,726,303.30/8,399.40
  6. Step 6: Final answer
    x = 5,205.88

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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.