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Finding the Fourth Proportional to 3,974.02, 5,473.06 and 3,887.92

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Solution

The fourth proportional to 3,974.02, 5,473.06 and 3,887.92 is: 5,354.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,974.02 : 5,473.06 = 3,887.92 : x
  2. Step 2: Convert to fraction form
    3,974.02/5,473.06 = 3,887.92/x
  3. Step 3: Cross multiply
    3,974.02x = 5,473.06 × 3,887.92
  4. Step 4: Simplify right side
    3,974.02x = 21,278,819.44
  5. Step 5: Solve for x
    x = 21,278,819.44/3,974.02
  6. Step 6: Final answer
    x = 5,354.48

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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.