Home / 3,912.53-5,399.43-2,144.12

Finding the Fourth Proportional to 3,912.53, 5,399.43 and 2,144.12

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Solution

The fourth proportional to 3,912.53, 5,399.43 and 2,144.12 is: 2,958.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.53 : 5,399.43 = 2,144.12 : x
  2. Step 2: Convert to fraction form
    3,912.53/5,399.43 = 2,144.12/x
  3. Step 3: Cross multiply
    3,912.53x = 5,399.43 × 2,144.12
  4. Step 4: Simplify right side
    3,912.53x = 11,577,039.35
  5. Step 5: Solve for x
    x = 11,577,039.35/3,912.53
  6. Step 6: Final answer
    x = 2,958.96

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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.