Home / 4,191.12-6,286.68-1,881

Finding the Fourth Proportional to 4,191.12, 6,286.68 and 1,881

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Solution

The fourth proportional to 4,191.12, 6,286.68 and 1,881 is: 2,821.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,191.12 : 6,286.68 = 1,881 : x
  2. Step 2: Convert to fraction form
    4,191.12/6,286.68 = 1,881/x
  3. Step 3: Cross multiply
    4,191.12x = 6,286.68 × 1,881
  4. Step 4: Simplify right side
    4,191.12x = 11,825,245.08
  5. Step 5: Solve for x
    x = 11,825,245.08/4,191.12
  6. Step 6: Final answer
    x = 2,821.50

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Double scale
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Similar ratio
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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.