Home / 3,912.47-5,399.21-2,144.06

Finding the Fourth Proportional to 3,912.47, 5,399.21 and 2,144.06

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Solution

The fourth proportional to 3,912.47, 5,399.21 and 2,144.06 is: 2,958.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.47 : 5,399.21 = 2,144.06 : x
  2. Step 2: Convert to fraction form
    3,912.47/5,399.21 = 2,144.06/x
  3. Step 3: Cross multiply
    3,912.47x = 5,399.21 × 2,144.06
  4. Step 4: Simplify right side
    3,912.47x = 11,576,219.47
  5. Step 5: Solve for x
    x = 11,576,219.47/3,912.47
  6. Step 6: Final answer
    x = 2,958.80

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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.