Home / 3,912.29-5,398.97-2,144.06

Finding the Fourth Proportional to 3,912.29, 5,398.97 and 2,144.06

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Solution

The fourth proportional to 3,912.29, 5,398.97 and 2,144.06 is: 2,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.29 : 5,398.97 = 2,144.06 : x
  2. Step 2: Convert to fraction form
    3,912.29/5,398.97 = 2,144.06/x
  3. Step 3: Cross multiply
    3,912.29x = 5,398.97 × 2,144.06
  4. Step 4: Simplify right side
    3,912.29x = 11,575,677.90
  5. Step 5: Solve for x
    x = 11,575,677.90/3,912.29
  6. Step 6: Final answer
    x = 2,958.80

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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.