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Finding the Fourth Proportional to 3,997.86, 5,512.86 and 3,440.22

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Solution

The fourth proportional to 3,997.86, 5,512.86 and 3,440.22 is: 4,743.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,997.86 : 5,512.86 = 3,440.22 : x
  2. Step 2: Convert to fraction form
    3,997.86/5,512.86 = 3,440.22/x
  3. Step 3: Cross multiply
    3,997.86x = 5,512.86 × 3,440.22
  4. Step 4: Simplify right side
    3,997.86x = 18,965,451.23
  5. Step 5: Solve for x
    x = 18,965,451.23/3,997.86
  6. Step 6: Final answer
    x = 4,743.90

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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.