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Finding the Fourth Proportional to 7,324.88, 10,979.16 and 2,879.24

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Solution

The fourth proportional to 7,324.88, 10,979.16 and 2,879.24 is: 4,315.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,324.88 : 10,979.16 = 2,879.24 : x
  2. Step 2: Convert to fraction form
    7,324.88/10,979.16 = 2,879.24/x
  3. Step 3: Cross multiply
    7,324.88x = 10,979.16 × 2,879.24
  4. Step 4: Simplify right side
    7,324.88x = 31,611,636.64
  5. Step 5: Solve for x
    x = 31,611,636.64/7,324.88
  6. Step 6: Final answer
    x = 4,315.65

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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.