Home / 3,754.20-5,177.66-2,812.21

Finding the Fourth Proportional to 3,754.20, 5,177.66 and 2,812.21

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Solution

The fourth proportional to 3,754.20, 5,177.66 and 2,812.21 is: 3,878.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,754.20 : 5,177.66 = 2,812.21 : x
  2. Step 2: Convert to fraction form
    3,754.20/5,177.66 = 2,812.21/x
  3. Step 3: Cross multiply
    3,754.20x = 5,177.66 × 2,812.21
  4. Step 4: Simplify right side
    3,754.20x = 14,560,640.22
  5. Step 5: Solve for x
    x = 14,560,640.22/3,754.20
  6. Step 6: Final answer
    x = 3,878.49

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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.