Home / 1,974.62-2,723.45-1,274.78

Finding the Fourth Proportional to 1,974.62, 2,723.45 and 1,274.78

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Solution

The fourth proportional to 1,974.62, 2,723.45 and 1,274.78 is: 1,758.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,974.62 : 2,723.45 = 1,274.78 : x
  2. Step 2: Convert to fraction form
    1,974.62/2,723.45 = 1,274.78/x
  3. Step 3: Cross multiply
    1,974.62x = 2,723.45 × 1,274.78
  4. Step 4: Simplify right side
    1,974.62x = 3,471,800.03
  5. Step 5: Solve for x
    x = 3,471,800.03/1,974.62
  6. Step 6: Final answer
    x = 1,758.21

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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.