Home / 2,149.97-3,225.45-669.11

Finding the Fourth Proportional to 2,149.97, 3,225.45 and 669.11

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Solution

The fourth proportional to 2,149.97, 3,225.45 and 669.11 is: 1,003.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,149.97 : 3,225.45 = 669.11 : x
  2. Step 2: Convert to fraction form
    2,149.97/3,225.45 = 669.11/x
  3. Step 3: Cross multiply
    2,149.97x = 3,225.45 × 669.11
  4. Step 4: Simplify right side
    2,149.97x = 2,158,180.85
  5. Step 5: Solve for x
    x = 2,158,180.85/2,149.97
  6. Step 6: Final answer
    x = 1,003.82

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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.