Home / 3,857.46-5,781.33-2,124.06

Finding the Fourth Proportional to 3,857.46, 5,781.33 and 2,124.06

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Solution

The fourth proportional to 3,857.46, 5,781.33 and 2,124.06 is: 3,183.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,857.46 : 5,781.33 = 2,124.06 : x
  2. Step 2: Convert to fraction form
    3,857.46/5,781.33 = 2,124.06/x
  3. Step 3: Cross multiply
    3,857.46x = 5,781.33 × 2,124.06
  4. Step 4: Simplify right side
    3,857.46x = 12,279,891.80
  5. Step 5: Solve for x
    x = 12,279,891.80/3,857.46
  6. Step 6: Final answer
    x = 3,183.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.