Home / 7,991.08-11,986.62-2,147.69

Finding the Fourth Proportional to 7,991.08, 11,986.62 and 2,147.69

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Solution

The fourth proportional to 7,991.08, 11,986.62 and 2,147.69 is: 3,221.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.08 : 11,986.62 = 2,147.69 : x
  2. Step 2: Convert to fraction form
    7,991.08/11,986.62 = 2,147.69/x
  3. Step 3: Cross multiply
    7,991.08x = 11,986.62 × 2,147.69
  4. Step 4: Simplify right side
    7,991.08x = 25,743,543.91
  5. Step 5: Solve for x
    x = 25,743,543.91/7,991.08
  6. Step 6: Final answer
    x = 3,221.54

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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.