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Finding the Third Proportional to 3,163.36 and 6,812.72

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Solution

The third proportional to 3,163.36 and 6,812.72 is: 14,672.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163.36 : 6,812.72 = 6,812.72 : x
  2. Step 2: Convert to fraction form
    3,163.36/6,812.72 = 6,812.72/x
  3. Step 3: Cross multiply
    3,163.36x = 6,812.72 × 6,812.72
  4. Step 4: Simplify right side
    3,163.36x = 46,413,136.77
  5. Step 5: Solve for x
    x = 46,413,136.77/3,163.36
  6. Step 6: Final answer
    x = 14,672.10

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.