Home / 4,081.75-5,632.82-2,218.75

Finding the Fourth Proportional to 4,081.75, 5,632.82 and 2,218.75

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Solution

The fourth proportional to 4,081.75, 5,632.82 and 2,218.75 is: 3,061.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,081.75 : 5,632.82 = 2,218.75 : x
  2. Step 2: Convert to fraction form
    4,081.75/5,632.82 = 2,218.75/x
  3. Step 3: Cross multiply
    4,081.75x = 5,632.82 × 2,218.75
  4. Step 4: Simplify right side
    4,081.75x = 12,497,819.38
  5. Step 5: Solve for x
    x = 12,497,819.38/4,081.75
  6. Step 6: Final answer
    x = 3,061.88

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Half scale
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Double scale
Find fourth proportional to 4,082.75, 5,634.20 and 2,219.75
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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.