Home / 3,754.38-5,180.52-2,160.78

Finding the Fourth Proportional to 3,754.38, 5,180.52 and 2,160.78

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Solution

The fourth proportional to 3,754.38, 5,180.52 and 2,160.78 is: 2,981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,754.38 : 5,180.52 = 2,160.78 : x
  2. Step 2: Convert to fraction form
    3,754.38/5,180.52 = 2,160.78/x
  3. Step 3: Cross multiply
    3,754.38x = 5,180.52 × 2,160.78
  4. Step 4: Simplify right side
    3,754.38x = 11,193,952.68
  5. Step 5: Solve for x
    x = 11,193,952.68/3,754.38
  6. Step 6: Final answer
    x = 2,981.57

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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.