Home / 3,932.13-5,422.11-2,812.65

Finding the Fourth Proportional to 3,932.13, 5,422.11 and 2,812.65

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Solution

The fourth proportional to 3,932.13, 5,422.11 and 2,812.65 is: 3,878.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,932.13 : 5,422.11 = 2,812.65 : x
  2. Step 2: Convert to fraction form
    3,932.13/5,422.11 = 2,812.65/x
  3. Step 3: Cross multiply
    3,932.13x = 5,422.11 × 2,812.65
  4. Step 4: Simplify right side
    3,932.13x = 15,250,497.69
  5. Step 5: Solve for x
    x = 15,250,497.69/3,932.13
  6. Step 6: Final answer
    x = 3,878.43

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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.