Home / 8,111.19-12,166.79-3,183.15

Finding the Fourth Proportional to 8,111.19, 12,166.79 and 3,183.15

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Solution

The fourth proportional to 8,111.19, 12,166.79 and 3,183.15 is: 4,774.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.19 : 12,166.79 = 3,183.15 : x
  2. Step 2: Convert to fraction form
    8,111.19/12,166.79 = 3,183.15/x
  3. Step 3: Cross multiply
    8,111.19x = 12,166.79 × 3,183.15
  4. Step 4: Simplify right side
    8,111.19x = 38,728,701.67
  5. Step 5: Solve for x
    x = 38,728,701.67/8,111.19
  6. Step 6: Final answer
    x = 4,774.73

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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.