Home / 1,979.13-2,731.19-1,082.88

Finding the Fourth Proportional to 1,979.13, 2,731.19 and 1,082.88

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Solution

The fourth proportional to 1,979.13, 2,731.19 and 1,082.88 is: 1,494.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.13 : 2,731.19 = 1,082.88 : x
  2. Step 2: Convert to fraction form
    1,979.13/2,731.19 = 1,082.88/x
  3. Step 3: Cross multiply
    1,979.13x = 2,731.19 × 1,082.88
  4. Step 4: Simplify right side
    1,979.13x = 2,957,531.96
  5. Step 5: Solve for x
    x = 2,957,531.96/1,979.13
  6. Step 6: Final answer
    x = 1,494.36

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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.