Home / 3,972.27-5,481.64-2,179.74

Finding the Fourth Proportional to 3,972.27, 5,481.64 and 2,179.74

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Solution

The fourth proportional to 3,972.27, 5,481.64 and 2,179.74 is: 3,007.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972.27 : 5,481.64 = 2,179.74 : x
  2. Step 2: Convert to fraction form
    3,972.27/5,481.64 = 2,179.74/x
  3. Step 3: Cross multiply
    3,972.27x = 5,481.64 × 2,179.74
  4. Step 4: Simplify right side
    3,972.27x = 11,948,573.25
  5. Step 5: Solve for x
    x = 11,948,573.25/3,972.27
  6. Step 6: Final answer
    x = 3,007.99

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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.