Home / 3,919.26-5,879.05-1,286.92

Finding the Fourth Proportional to 3,919.26, 5,879.05 and 1,286.92

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Solution

The fourth proportional to 3,919.26, 5,879.05 and 1,286.92 is: 1,930.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.26 : 5,879.05 = 1,286.92 : x
  2. Step 2: Convert to fraction form
    3,919.26/5,879.05 = 1,286.92/x
  3. Step 3: Cross multiply
    3,919.26x = 5,879.05 × 1,286.92
  4. Step 4: Simplify right side
    3,919.26x = 7,565,871.16
  5. Step 5: Solve for x
    x = 7,565,871.16/3,919.26
  6. Step 6: Final answer
    x = 1,930.43

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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.