Home / 3,891.42-5,370.17-2,212.83

Finding the Fourth Proportional to 3,891.42, 5,370.17 and 2,212.83

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Solution

The fourth proportional to 3,891.42, 5,370.17 and 2,212.83 is: 3,053.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.42 : 5,370.17 = 2,212.83 : x
  2. Step 2: Convert to fraction form
    3,891.42/5,370.17 = 2,212.83/x
  3. Step 3: Cross multiply
    3,891.42x = 5,370.17 × 2,212.83
  4. Step 4: Simplify right side
    3,891.42x = 11,883,273.28
  5. Step 5: Solve for x
    x = 11,883,273.28/3,891.42
  6. Step 6: Final answer
    x = 3,053.71

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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.