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Finding the Fourth Proportional to 8,149.68, 12,221.96 and 3,469.64

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Solution

The fourth proportional to 8,149.68, 12,221.96 and 3,469.64 is: 5,203.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,149.68 : 12,221.96 = 3,469.64 : x
  2. Step 2: Convert to fraction form
    8,149.68/12,221.96 = 3,469.64/x
  3. Step 3: Cross multiply
    8,149.68x = 12,221.96 × 3,469.64
  4. Step 4: Simplify right side
    8,149.68x = 42,405,722.84
  5. Step 5: Solve for x
    x = 42,405,722.84/8,149.68
  6. Step 6: Final answer
    x = 5,203.36

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1.5x scale

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.