Home / 7,987.82-11,981.79-2,793.69

Finding the Fourth Proportional to 7,987.82, 11,981.79 and 2,793.69

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Solution

The fourth proportional to 7,987.82, 11,981.79 and 2,793.69 is: 4,190.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.82 : 11,981.79 = 2,793.69 : x
  2. Step 2: Convert to fraction form
    7,987.82/11,981.79 = 2,793.69/x
  3. Step 3: Cross multiply
    7,987.82x = 11,981.79 × 2,793.69
  4. Step 4: Simplify right side
    7,987.82x = 33,473,406.91
  5. Step 5: Solve for x
    x = 33,473,406.91/7,987.82
  6. Step 6: Final answer
    x = 4,190.56

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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.