Home / 7,991.19-11,979.45-2,794.23

Finding the Fourth Proportional to 7,991.19, 11,979.45 and 2,794.23

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Solution

The fourth proportional to 7,991.19, 11,979.45 and 2,794.23 is: 4,188.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.19 : 11,979.45 = 2,794.23 : x
  2. Step 2: Convert to fraction form
    7,991.19/11,979.45 = 2,794.23/x
  3. Step 3: Cross multiply
    7,991.19x = 11,979.45 × 2,794.23
  4. Step 4: Simplify right side
    7,991.19x = 33,473,338.57
  5. Step 5: Solve for x
    x = 33,473,338.57/7,991.19
  6. Step 6: Final answer
    x = 4,188.78

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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.