Home / 2,251.38-3,380.80-1,391.16

Finding the Fourth Proportional to 2,251.38, 3,380.80 and 1,391.16

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Solution

The fourth proportional to 2,251.38, 3,380.80 and 1,391.16 is: 2,089.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,251.38 : 3,380.80 = 1,391.16 : x
  2. Step 2: Convert to fraction form
    2,251.38/3,380.80 = 1,391.16/x
  3. Step 3: Cross multiply
    2,251.38x = 3,380.80 × 1,391.16
  4. Step 4: Simplify right side
    2,251.38x = 4,703,213.35
  5. Step 5: Solve for x
    x = 4,703,213.35/2,251.38
  6. Step 6: Final answer
    x = 2,089.04

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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.