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Finding the Fourth Proportional to 7,329.65, 10,986.39 and 3,379.79

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Solution

The fourth proportional to 7,329.65, 10,986.39 and 3,379.79 is: 5,065.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,329.65 : 10,986.39 = 3,379.79 : x
  2. Step 2: Convert to fraction form
    7,329.65/10,986.39 = 3,379.79/x
  3. Step 3: Cross multiply
    7,329.65x = 10,986.39 × 3,379.79
  4. Step 4: Simplify right side
    7,329.65x = 37,131,636.13
  5. Step 5: Solve for x
    x = 37,131,636.13/7,329.65
  6. Step 6: Final answer
    x = 5,065.95

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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.