Home / 3,912.84-5,399.78-2,144.54

Finding the Fourth Proportional to 3,912.84, 5,399.78 and 2,144.54

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Solution

The fourth proportional to 3,912.84, 5,399.78 and 2,144.54 is: 2,959.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.84 : 5,399.78 = 2,144.54 : x
  2. Step 2: Convert to fraction form
    3,912.84/5,399.78 = 2,144.54/x
  3. Step 3: Cross multiply
    3,912.84x = 5,399.78 × 2,144.54
  4. Step 4: Simplify right side
    3,912.84x = 11,580,006.48
  5. Step 5: Solve for x
    x = 11,580,006.48/3,912.84
  6. Step 6: Final answer
    x = 2,959.49

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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.