Home / 1,942.27-2,680.29-1,079.88

Finding the Fourth Proportional to 1,942.27, 2,680.29 and 1,079.88

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Solution

The fourth proportional to 1,942.27, 2,680.29 and 1,079.88 is: 1,490.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,942.27 : 2,680.29 = 1,079.88 : x
  2. Step 2: Convert to fraction form
    1,942.27/2,680.29 = 1,079.88/x
  3. Step 3: Cross multiply
    1,942.27x = 2,680.29 × 1,079.88
  4. Step 4: Simplify right side
    1,942.27x = 2,894,391.57
  5. Step 5: Solve for x
    x = 2,894,391.57/1,942.27
  6. Step 6: Final answer
    x = 1,490.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.