Home / 3,329.22-4,990.92-1,275.78

Finding the Fourth Proportional to 3,329.22, 4,990.92 and 1,275.78

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Solution

The fourth proportional to 3,329.22, 4,990.92 and 1,275.78 is: 1,912.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,329.22 : 4,990.92 = 1,275.78 : x
  2. Step 2: Convert to fraction form
    3,329.22/4,990.92 = 1,275.78/x
  3. Step 3: Cross multiply
    3,329.22x = 4,990.92 × 1,275.78
  4. Step 4: Simplify right side
    3,329.22x = 6,367,315.92
  5. Step 5: Solve for x
    x = 6,367,315.92/3,329.22
  6. Step 6: Final answer
    x = 1,912.55

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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.