Home / 7,979.09-11,974.07-2,784.96

Finding the Fourth Proportional to 7,979.09, 11,974.07 and 2,784.96

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Solution

The fourth proportional to 7,979.09, 11,974.07 and 2,784.96 is: 4,179.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.09 : 11,974.07 = 2,784.96 : x
  2. Step 2: Convert to fraction form
    7,979.09/11,974.07 = 2,784.96/x
  3. Step 3: Cross multiply
    7,979.09x = 11,974.07 × 2,784.96
  4. Step 4: Simplify right side
    7,979.09x = 33,347,312.95
  5. Step 5: Solve for x
    x = 33,347,312.95/7,979.09
  6. Step 6: Final answer
    x = 4,179.34

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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.