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Finding the Fourth Proportional to 8,412.15, 12,617.22 and 3,481.20

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Solution

The fourth proportional to 8,412.15, 12,617.22 and 3,481.20 is: 5,221.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,412.15 : 12,617.22 = 3,481.20 : x
  2. Step 2: Convert to fraction form
    8,412.15/12,617.22 = 3,481.20/x
  3. Step 3: Cross multiply
    8,412.15x = 12,617.22 × 3,481.20
  4. Step 4: Simplify right side
    8,412.15x = 43,923,066.26
  5. Step 5: Solve for x
    x = 43,923,066.26/8,412.15
  6. Step 6: Final answer
    x = 5,221.38

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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.