Home / 3,939.82-5,436.62-2,447.44

Finding the Fourth Proportional to 3,939.82, 5,436.62 and 2,447.44

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Solution

The fourth proportional to 3,939.82, 5,436.62 and 2,447.44 is: 3,377.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,939.82 : 5,436.62 = 2,447.44 : x
  2. Step 2: Convert to fraction form
    3,939.82/5,436.62 = 2,447.44/x
  3. Step 3: Cross multiply
    3,939.82x = 5,436.62 × 2,447.44
  4. Step 4: Simplify right side
    3,939.82x = 13,305,801.25
  5. Step 5: Solve for x
    x = 13,305,801.25/3,939.82
  6. Step 6: Final answer
    x = 3,377.26

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1.5x scale

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.