Home / 3,876.29-5,339.87-2,879.84

Finding the Fourth Proportional to 3,876.29, 5,339.87 and 2,879.84

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Solution

The fourth proportional to 3,876.29, 5,339.87 and 2,879.84 is: 3,967.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,876.29 : 5,339.87 = 2,879.84 : x
  2. Step 2: Convert to fraction form
    3,876.29/5,339.87 = 2,879.84/x
  3. Step 3: Cross multiply
    3,876.29x = 5,339.87 × 2,879.84
  4. Step 4: Simplify right side
    3,876.29x = 15,377,930.12
  5. Step 5: Solve for x
    x = 15,377,930.12/3,876.29
  6. Step 6: Final answer
    x = 3,967.18

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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.