Home / 3,913.04-5,399.70-2,144.78

Finding the Fourth Proportional to 3,913.04, 5,399.70 and 2,144.78

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Solution

The fourth proportional to 3,913.04, 5,399.70 and 2,144.78 is: 2,959.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.04 : 5,399.70 = 2,144.78 : x
  2. Step 2: Convert to fraction form
    3,913.04/5,399.70 = 2,144.78/x
  3. Step 3: Cross multiply
    3,913.04x = 5,399.70 × 2,144.78
  4. Step 4: Simplify right side
    3,913.04x = 11,581,168.57
  5. Step 5: Solve for x
    x = 11,581,168.57/3,913.04
  6. Step 6: Final answer
    x = 2,959.63

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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.