Home / 2,668.12-3,996.82-1,329.88

Finding the Fourth Proportional to 2,668.12, 3,996.82 and 1,329.88

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Solution

The fourth proportional to 2,668.12, 3,996.82 and 1,329.88 is: 1,992.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,668.12 : 3,996.82 = 1,329.88 : x
  2. Step 2: Convert to fraction form
    2,668.12/3,996.82 = 1,329.88/x
  3. Step 3: Cross multiply
    2,668.12x = 3,996.82 × 1,329.88
  4. Step 4: Simplify right side
    2,668.12x = 5,315,300.44
  5. Step 5: Solve for x
    x = 5,315,300.44/2,668.12
  6. Step 6: Final answer
    x = 1,992.15

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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.