Home / 1,983.12-2,974.26-1,251.72

Finding the Fourth Proportional to 1,983.12, 2,974.26 and 1,251.72

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Solution

The fourth proportional to 1,983.12, 2,974.26 and 1,251.72 is: 1,877.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,983.12 : 2,974.26 = 1,251.72 : x
  2. Step 2: Convert to fraction form
    1,983.12/2,974.26 = 1,251.72/x
  3. Step 3: Cross multiply
    1,983.12x = 2,974.26 × 1,251.72
  4. Step 4: Simplify right side
    1,983.12x = 3,722,940.73
  5. Step 5: Solve for x
    x = 3,722,940.73/1,983.12
  6. Step 6: Final answer
    x = 1,877.31

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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.