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Finding the Fourth Proportional to 3,998.48, 5,517.48 and 2,230.16

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Solution

The fourth proportional to 3,998.48, 5,517.48 and 2,230.16 is: 3,077.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.48 : 5,517.48 = 2,230.16 : x
  2. Step 2: Convert to fraction form
    3,998.48/5,517.48 = 2,230.16/x
  3. Step 3: Cross multiply
    3,998.48x = 5,517.48 × 2,230.16
  4. Step 4: Simplify right side
    3,998.48x = 12,304,863.20
  5. Step 5: Solve for x
    x = 12,304,863.20/3,998.48
  6. Step 6: Final answer
    x = 3,077.39

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.