Home / 3,724.92-5,140.05-2,131.23

Finding the Fourth Proportional to 3,724.92, 5,140.05 and 2,131.23

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Solution

The fourth proportional to 3,724.92, 5,140.05 and 2,131.23 is: 2,940.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,724.92 : 5,140.05 = 2,131.23 : x
  2. Step 2: Convert to fraction form
    3,724.92/5,140.05 = 2,131.23/x
  3. Step 3: Cross multiply
    3,724.92x = 5,140.05 × 2,131.23
  4. Step 4: Simplify right side
    3,724.92x = 10,954,628.76
  5. Step 5: Solve for x
    x = 10,954,628.76/3,724.92
  6. Step 6: Final answer
    x = 2,940.90

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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.