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Finding the Fourth Proportional to 7,995.88, 11,992.47 and 2,151.19

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Solution

The fourth proportional to 7,995.88, 11,992.47 and 2,151.19 is: 3,226.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,995.88 : 11,992.47 = 2,151.19 : x
  2. Step 2: Convert to fraction form
    7,995.88/11,992.47 = 2,151.19/x
  3. Step 3: Cross multiply
    7,995.88x = 11,992.47 × 2,151.19
  4. Step 4: Simplify right side
    7,995.88x = 25,798,081.54
  5. Step 5: Solve for x
    x = 25,798,081.54/7,995.88
  6. Step 6: Final answer
    x = 3,226.42

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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.