Home / 1,979.08-2,731.04-1,082.80

Finding the Fourth Proportional to 1,979.08, 2,731.04 and 1,082.80

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Solution

The fourth proportional to 1,979.08, 2,731.04 and 1,082.80 is: 1,494.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.08 : 2,731.04 = 1,082.80 : x
  2. Step 2: Convert to fraction form
    1,979.08/2,731.04 = 1,082.80/x
  3. Step 3: Cross multiply
    1,979.08x = 2,731.04 × 1,082.80
  4. Step 4: Simplify right side
    1,979.08x = 2,957,151.04
  5. Step 5: Solve for x
    x = 2,957,151.04/1,979.08
  6. Step 6: Final answer
    x = 1,494.21

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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.