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Finding the Fourth Proportional to 11,963.79, 17,945.82 and 3,643.92

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Solution

The fourth proportional to 11,963.79, 17,945.82 and 3,643.92 is: 5,465.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,963.79 : 17,945.82 = 3,643.92 : x
  2. Step 2: Convert to fraction form
    11,963.79/17,945.82 = 3,643.92/x
  3. Step 3: Cross multiply
    11,963.79x = 17,945.82 × 3,643.92
  4. Step 4: Simplify right side
    11,963.79x = 65,393,132.41
  5. Step 5: Solve for x
    x = 65,393,132.41/11,963.79
  6. Step 6: Final answer
    x = 5,465.92

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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.