Home / 3,971.80-5,481.08-2,179.29

Finding the Fourth Proportional to 3,971.80, 5,481.08 and 2,179.29

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Solution

The fourth proportional to 3,971.80, 5,481.08 and 2,179.29 is: 3,007.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,971.80 : 5,481.08 = 2,179.29 : x
  2. Step 2: Convert to fraction form
    3,971.80/5,481.08 = 2,179.29/x
  3. Step 3: Cross multiply
    3,971.80x = 5,481.08 × 2,179.29
  4. Step 4: Simplify right side
    3,971.80x = 11,944,862.83
  5. Step 5: Solve for x
    x = 11,944,862.83/3,971.80
  6. Step 6: Final answer
    x = 3,007.42

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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.