Home / 3,912.75-5,399.60-2,144.43

Finding the Fourth Proportional to 3,912.75, 5,399.60 and 2,144.43

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Solution

The fourth proportional to 3,912.75, 5,399.60 and 2,144.43 is: 2,959.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.75 : 5,399.60 = 2,144.43 : x
  2. Step 2: Convert to fraction form
    3,912.75/5,399.60 = 2,144.43/x
  3. Step 3: Cross multiply
    3,912.75x = 5,399.60 × 2,144.43
  4. Step 4: Simplify right side
    3,912.75x = 11,579,026.51
  5. Step 5: Solve for x
    x = 11,579,026.51/3,912.75
  6. Step 6: Final answer
    x = 2,959.31

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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.