Home / 3,912.68-5,399.49-2,144.31

Finding the Fourth Proportional to 3,912.68, 5,399.49 and 2,144.31

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Solution

The fourth proportional to 3,912.68, 5,399.49 and 2,144.31 is: 2,959.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.68 : 5,399.49 = 2,144.31 : x
  2. Step 2: Convert to fraction form
    3,912.68/5,399.49 = 2,144.31/x
  3. Step 3: Cross multiply
    3,912.68x = 5,399.49 × 2,144.31
  4. Step 4: Simplify right side
    3,912.68x = 11,578,180.40
  5. Step 5: Solve for x
    x = 11,578,180.40/3,912.68
  6. Step 6: Final answer
    x = 2,959.15

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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.