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Finding the Fourth Proportional to 7,992.71, 11,987.70 and 3,609.14

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Solution

The fourth proportional to 7,992.71, 11,987.70 and 3,609.14 is: 5,413.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,992.71 : 11,987.70 = 3,609.14 : x
  2. Step 2: Convert to fraction form
    7,992.71/11,987.70 = 3,609.14/x
  3. Step 3: Cross multiply
    7,992.71x = 11,987.70 × 3,609.14
  4. Step 4: Simplify right side
    7,992.71x = 43,265,227.64
  5. Step 5: Solve for x
    x = 43,265,227.64/7,992.71
  6. Step 6: Final answer
    x = 5,413.09

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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.