Home / 2,131.98-3,198.84-834.36

Finding the Fourth Proportional to 2,131.98, 3,198.84 and 834.36

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Solution

The fourth proportional to 2,131.98, 3,198.84 and 834.36 is: 1,251.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.98 : 3,198.84 = 834.36 : x
  2. Step 2: Convert to fraction form
    2,131.98/3,198.84 = 834.36/x
  3. Step 3: Cross multiply
    2,131.98x = 3,198.84 × 834.36
  4. Step 4: Simplify right side
    2,131.98x = 2,668,984.14
  5. Step 5: Solve for x
    x = 2,668,984.14/2,131.98
  6. Step 6: Final answer
    x = 1,251.88

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1.5x scale

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.