Home / 3,921.98-5,882.49-1,422.90

Finding the Fourth Proportional to 3,921.98, 5,882.49 and 1,422.90

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Solution

The fourth proportional to 3,921.98, 5,882.49 and 1,422.90 is: 2,134.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.98 : 5,882.49 = 1,422.90 : x
  2. Step 2: Convert to fraction form
    3,921.98/5,882.49 = 1,422.90/x
  3. Step 3: Cross multiply
    3,921.98x = 5,882.49 × 1,422.90
  4. Step 4: Simplify right side
    3,921.98x = 8,370,195.02
  5. Step 5: Solve for x
    x = 8,370,195.02/3,921.98
  6. Step 6: Final answer
    x = 2,134.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.