Home / 3,932.71-5,422.10-3,221.93

Finding the Fourth Proportional to 3,932.71, 5,422.10 and 3,221.93

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Solution

The fourth proportional to 3,932.71, 5,422.10 and 3,221.93 is: 4,442.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.71 : 5,422.10 = 3,221.93 : x
  2. Step 2: Convert to fraction form
    3,932.71/5,422.10 = 3,221.93/x
  3. Step 3: Cross multiply
    3,932.71x = 5,422.10 × 3,221.93
  4. Step 4: Simplify right side
    3,932.71x = 17,469,624.10
  5. Step 5: Solve for x
    x = 17,469,624.10/3,932.71
  6. Step 6: Final answer
    x = 4,442.14

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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.