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Finding the Fourth Proportional to 3,963.28, 5,945.60 and 1,365.60

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Solution

The fourth proportional to 3,963.28, 5,945.60 and 1,365.60 is: 2,048.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,963.28 : 5,945.60 = 1,365.60 : x
  2. Step 2: Convert to fraction form
    3,963.28/5,945.60 = 1,365.60/x
  3. Step 3: Cross multiply
    3,963.28x = 5,945.60 × 1,365.60
  4. Step 4: Simplify right side
    3,963.28x = 8,119,311.36
  5. Step 5: Solve for x
    x = 8,119,311.36/3,963.28
  6. Step 6: Final answer
    x = 2,048.63

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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.