Home / 2,974.50-4,105.62-1,979.28

Finding the Fourth Proportional to 2,974.50, 4,105.62 and 1,979.28

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Solution

The fourth proportional to 2,974.50, 4,105.62 and 1,979.28 is: 2,731.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,974.50 : 4,105.62 = 1,979.28 : x
  2. Step 2: Convert to fraction form
    2,974.50/4,105.62 = 1,979.28/x
  3. Step 3: Cross multiply
    2,974.50x = 4,105.62 × 1,979.28
  4. Step 4: Simplify right side
    2,974.50x = 8,126,171.55
  5. Step 5: Solve for x
    x = 8,126,171.55/2,974.50
  6. Step 6: Final answer
    x = 2,731.95

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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.