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Finding the Fourth Proportional to 3,940.59, 5,907.11 and 1,749.09

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Solution

The fourth proportional to 3,940.59, 5,907.11 and 1,749.09 is: 2,621.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.59 : 5,907.11 = 1,749.09 : x
  2. Step 2: Convert to fraction form
    3,940.59/5,907.11 = 1,749.09/x
  3. Step 3: Cross multiply
    3,940.59x = 5,907.11 × 1,749.09
  4. Step 4: Simplify right side
    3,940.59x = 10,332,058.28
  5. Step 5: Solve for x
    x = 10,332,058.28/3,940.59
  6. Step 6: Final answer
    x = 2,621.96

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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.