Home / 7,979.67-11,974.98-2,785.55

Finding the Fourth Proportional to 7,979.67, 11,974.98 and 2,785.55

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Solution

The fourth proportional to 7,979.67, 11,974.98 and 2,785.55 is: 4,180.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.67 : 11,974.98 = 2,785.55 : x
  2. Step 2: Convert to fraction form
    7,979.67/11,974.98 = 2,785.55/x
  3. Step 3: Cross multiply
    7,979.67x = 11,974.98 × 2,785.55
  4. Step 4: Simplify right side
    7,979.67x = 33,356,880.12
  5. Step 5: Solve for x
    x = 33,356,880.12/7,979.67
  6. Step 6: Final answer
    x = 4,180.23

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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.