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Finding the Fourth Proportional to 3,998.04, 5,517 and 2,229.72

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Solution

The fourth proportional to 3,998.04, 5,517 and 2,229.72 is: 3,076.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.04 : 5,517 = 2,229.72 : x
  2. Step 2: Convert to fraction form
    3,998.04/5,517 = 2,229.72/x
  3. Step 3: Cross multiply
    3,998.04x = 5,517 × 2,229.72
  4. Step 4: Simplify right side
    3,998.04x = 12,301,365.24
  5. Step 5: Solve for x
    x = 12,301,365.24/3,998.04
  6. Step 6: Final answer
    x = 3,076.85

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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.