Home / 7,678.65-11,517.99-2,132.29

Finding the Fourth Proportional to 7,678.65, 11,517.99 and 2,132.29

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Solution

The fourth proportional to 7,678.65, 11,517.99 and 2,132.29 is: 3,198.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,678.65 : 11,517.99 = 2,132.29 : x
  2. Step 2: Convert to fraction form
    7,678.65/11,517.99 = 2,132.29/x
  3. Step 3: Cross multiply
    7,678.65x = 11,517.99 × 2,132.29
  4. Step 4: Simplify right side
    7,678.65x = 24,559,694.90
  5. Step 5: Solve for x
    x = 24,559,694.90/7,678.65
  6. Step 6: Final answer
    x = 3,198.44

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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.