Home / 2,519.91-3,780.26-1,286.65

Finding the Fourth Proportional to 2,519.91, 3,780.26 and 1,286.65

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Solution

The fourth proportional to 2,519.91, 3,780.26 and 1,286.65 is: 1,930.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,519.91 : 3,780.26 = 1,286.65 : x
  2. Step 2: Convert to fraction form
    2,519.91/3,780.26 = 1,286.65/x
  3. Step 3: Cross multiply
    2,519.91x = 3,780.26 × 1,286.65
  4. Step 4: Simplify right side
    2,519.91x = 4,863,865.10
  5. Step 5: Solve for x
    x = 4,863,865.10/2,519.91
  6. Step 6: Final answer
    x = 1,930.17

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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.