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Finding the Fourth Proportional to 7,329.80, 10,995 and 2,135.67

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Solution

The fourth proportional to 7,329.80, 10,995 and 2,135.67 is: 3,203.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,329.80 : 10,995 = 2,135.67 : x
  2. Step 2: Convert to fraction form
    7,329.80/10,995 = 2,135.67/x
  3. Step 3: Cross multiply
    7,329.80x = 10,995 × 2,135.67
  4. Step 4: Simplify right side
    7,329.80x = 23,481,691.65
  5. Step 5: Solve for x
    x = 23,481,691.65/7,329.80
  6. Step 6: Final answer
    x = 3,203.59

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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.