Home / 2,919.38-4,377.92-1,276.70

Finding the Fourth Proportional to 2,919.38, 4,377.92 and 1,276.70

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Solution

The fourth proportional to 2,919.38, 4,377.92 and 1,276.70 is: 1,914.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.38 : 4,377.92 = 1,276.70 : x
  2. Step 2: Convert to fraction form
    2,919.38/4,377.92 = 1,276.70/x
  3. Step 3: Cross multiply
    2,919.38x = 4,377.92 × 1,276.70
  4. Step 4: Simplify right side
    2,919.38x = 5,589,290.46
  5. Step 5: Solve for x
    x = 5,589,290.46/2,919.38
  6. Step 6: Final answer
    x = 1,914.55

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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.