Home / 3,912.62-5,399.22-2,143.84

Finding the Fourth Proportional to 3,912.62, 5,399.22 and 2,143.84

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Solution

The fourth proportional to 3,912.62, 5,399.22 and 2,143.84 is: 2,958.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.62 : 5,399.22 = 2,143.84 : x
  2. Step 2: Convert to fraction form
    3,912.62/5,399.22 = 2,143.84/x
  3. Step 3: Cross multiply
    3,912.62x = 5,399.22 × 2,143.84
  4. Step 4: Simplify right side
    3,912.62x = 11,575,063.80
  5. Step 5: Solve for x
    x = 11,575,063.80/3,912.62
  6. Step 6: Final answer
    x = 2,958.39

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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.