Home / 3,919.38-5,879.07-2,620.14

Finding the Fourth Proportional to 3,919.38, 5,879.07 and 2,620.14

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Solution

The fourth proportional to 3,919.38, 5,879.07 and 2,620.14 is: 3,930.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.38 : 5,879.07 = 2,620.14 : x
  2. Step 2: Convert to fraction form
    3,919.38/5,879.07 = 2,620.14/x
  3. Step 3: Cross multiply
    3,919.38x = 5,879.07 × 2,620.14
  4. Step 4: Simplify right side
    3,919.38x = 15,403,986.47
  5. Step 5: Solve for x
    x = 15,403,986.47/3,919.38
  6. Step 6: Final answer
    x = 3,930.21

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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.