Home / 7,979.78-11,964.78-3,044.12

Finding the Fourth Proportional to 7,979.78, 11,964.78 and 3,044.12

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Solution

The fourth proportional to 7,979.78, 11,964.78 and 3,044.12 is: 4,564.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.78 : 11,964.78 = 3,044.12 : x
  2. Step 2: Convert to fraction form
    7,979.78/11,964.78 = 3,044.12/x
  3. Step 3: Cross multiply
    7,979.78x = 11,964.78 × 3,044.12
  4. Step 4: Simplify right side
    7,979.78x = 36,422,226.09
  5. Step 5: Solve for x
    x = 36,422,226.09/7,979.78
  6. Step 6: Final answer
    x = 4,564.31

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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.