Home / 3,882.12-5,357.44-2,113.80

Finding the Fourth Proportional to 3,882.12, 5,357.44 and 2,113.80

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Solution

The fourth proportional to 3,882.12, 5,357.44 and 2,113.80 is: 2,917.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.12 : 5,357.44 = 2,113.80 : x
  2. Step 2: Convert to fraction form
    3,882.12/5,357.44 = 2,113.80/x
  3. Step 3: Cross multiply
    3,882.12x = 5,357.44 × 2,113.80
  4. Step 4: Simplify right side
    3,882.12x = 11,324,556.67
  5. Step 5: Solve for x
    x = 11,324,556.67/3,882.12
  6. Step 6: Final answer
    x = 2,917.11

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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.