Home / 3,725.16-5,140.92-2,131.88

Finding the Fourth Proportional to 3,725.16, 5,140.92 and 2,131.88

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Solution

The fourth proportional to 3,725.16, 5,140.92 and 2,131.88 is: 2,942.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,725.16 : 5,140.92 = 2,131.88 : x
  2. Step 2: Convert to fraction form
    3,725.16/5,140.92 = 2,131.88/x
  3. Step 3: Cross multiply
    3,725.16x = 5,140.92 × 2,131.88
  4. Step 4: Simplify right side
    3,725.16x = 10,959,824.53
  5. Step 5: Solve for x
    x = 10,959,824.53/3,725.16
  6. Step 6: Final answer
    x = 2,942.11

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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.