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Finding the Fourth Proportional to 9,812.29, 14,721.50 and 3,243.09

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Solution

The fourth proportional to 9,812.29, 14,721.50 and 3,243.09 is: 4,865.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,812.29 : 14,721.50 = 3,243.09 : x
  2. Step 2: Convert to fraction form
    9,812.29/14,721.50 = 3,243.09/x
  3. Step 3: Cross multiply
    9,812.29x = 14,721.50 × 3,243.09
  4. Step 4: Simplify right side
    9,812.29x = 47,743,111.70
  5. Step 5: Solve for x
    x = 47,743,111.70/9,812.29
  6. Step 6: Final answer
    x = 4,865.64

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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.