Home / 2,282.40-3,425.76-1,961.28

Finding the Fourth Proportional to 2,282.40, 3,425.76 and 1,961.28

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Solution

The fourth proportional to 2,282.40, 3,425.76 and 1,961.28 is: 2,943.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,282.40 : 3,425.76 = 1,961.28 : x
  2. Step 2: Convert to fraction form
    2,282.40/3,425.76 = 1,961.28/x
  3. Step 3: Cross multiply
    2,282.40x = 3,425.76 × 1,961.28
  4. Step 4: Simplify right side
    2,282.40x = 6,718,874.57
  5. Step 5: Solve for x
    x = 6,718,874.57/2,282.40
  6. Step 6: Final answer
    x = 2,943.78

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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.