Home / 7,979.52-11,974.75-2,785.40

Finding the Fourth Proportional to 7,979.52, 11,974.75 and 2,785.40

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Solution

The fourth proportional to 7,979.52, 11,974.75 and 2,785.40 is: 4,180.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.52 : 11,974.75 = 2,785.40 : x
  2. Step 2: Convert to fraction form
    7,979.52/11,974.75 = 2,785.40/x
  3. Step 3: Cross multiply
    7,979.52x = 11,974.75 × 2,785.40
  4. Step 4: Simplify right side
    7,979.52x = 33,354,468.65
  5. Step 5: Solve for x
    x = 33,354,468.65/7,979.52
  6. Step 6: Final answer
    x = 4,180.01

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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.