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Finding the Fourth Proportional to 5,940.38, 8,907.99 and 2,821.28

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Solution

The fourth proportional to 5,940.38, 8,907.99 and 2,821.28 is: 4,230.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,940.38 : 8,907.99 = 2,821.28 : x
  2. Step 2: Convert to fraction form
    5,940.38/8,907.99 = 2,821.28/x
  3. Step 3: Cross multiply
    5,940.38x = 8,907.99 × 2,821.28
  4. Step 4: Simplify right side
    5,940.38x = 25,131,934.03
  5. Step 5: Solve for x
    x = 25,131,934.03/5,940.38
  6. Step 6: Final answer
    x = 4,230.69

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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.