Home / 7,974.45-11,961.68-2,131.11

Finding the Fourth Proportional to 7,974.45, 11,961.68 and 2,131.11

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Solution

The fourth proportional to 7,974.45, 11,961.68 and 2,131.11 is: 3,196.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,974.45 : 11,961.68 = 2,131.11 : x
  2. Step 2: Convert to fraction form
    7,974.45/11,961.68 = 2,131.11/x
  3. Step 3: Cross multiply
    7,974.45x = 11,961.68 × 2,131.11
  4. Step 4: Simplify right side
    7,974.45x = 25,491,645.21
  5. Step 5: Solve for x
    x = 25,491,645.21/7,974.45
  6. Step 6: Final answer
    x = 3,196.67

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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.