Home / 3,900.91-5,382.97-2,132.14

Finding the Fourth Proportional to 3,900.91, 5,382.97 and 2,132.14

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Solution

The fourth proportional to 3,900.91, 5,382.97 and 2,132.14 is: 2,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,900.91 : 5,382.97 = 2,132.14 : x
  2. Step 2: Convert to fraction form
    3,900.91/5,382.97 = 2,132.14/x
  3. Step 3: Cross multiply
    3,900.91x = 5,382.97 × 2,132.14
  4. Step 4: Simplify right side
    3,900.91x = 11,477,245.66
  5. Step 5: Solve for x
    x = 11,477,245.66/3,900.91
  6. Step 6: Final answer
    x = 2,942.20

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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.