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Finding the Fourth Proportional to 9,963.79, 14,947.30 and 3,389.29

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Solution

The fourth proportional to 9,963.79, 14,947.30 and 3,389.29 is: 5,084.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,963.79 : 14,947.30 = 3,389.29 : x
  2. Step 2: Convert to fraction form
    9,963.79/14,947.30 = 3,389.29/x
  3. Step 3: Cross multiply
    9,963.79x = 14,947.30 × 3,389.29
  4. Step 4: Simplify right side
    9,963.79x = 50,660,659.68
  5. Step 5: Solve for x
    x = 50,660,659.68/9,963.79
  6. Step 6: Final answer
    x = 5,084.48

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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.