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Finding the Fourth Proportional to 7,995.39, 11,992.15 and 2,151.54

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Solution

The fourth proportional to 7,995.39, 11,992.15 and 2,151.54 is: 3,227.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,995.39 : 11,992.15 = 2,151.54 : x
  2. Step 2: Convert to fraction form
    7,995.39/11,992.15 = 2,151.54/x
  3. Step 3: Cross multiply
    7,995.39x = 11,992.15 × 2,151.54
  4. Step 4: Simplify right side
    7,995.39x = 25,801,590.41
  5. Step 5: Solve for x
    x = 25,801,590.41/7,995.39
  6. Step 6: Final answer
    x = 3,227.06

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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.