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Finding the Fourth Proportional to 8,279.12, 12,412.16 and 3,350

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Solution

The fourth proportional to 8,279.12, 12,412.16 and 3,350 is: 5,022.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,279.12 : 12,412.16 = 3,350 : x
  2. Step 2: Convert to fraction form
    8,279.12/12,412.16 = 3,350/x
  3. Step 3: Cross multiply
    8,279.12x = 12,412.16 × 3,350
  4. Step 4: Simplify right side
    8,279.12x = 41,580,736
  5. Step 5: Solve for x
    x = 41,580,736/8,279.12
  6. Step 6: Final answer
    x = 5,022.36

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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.