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Finding the Third Proportional to 3,943 and 7,022

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Solution

The third proportional to 3,943 and 7,022 is: 12,505.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943 : 7,022 = 7,022 : x
  2. Step 2: Convert to fraction form
    3,943/7,022 = 7,022/x
  3. Step 3: Cross multiply
    3,943x = 7,022 × 7,022
  4. Step 4: Simplify right side
    3,943x = 49,308,484
  5. Step 5: Solve for x
    x = 49,308,484/3,943
  6. Step 6: Final answer
    x = 12,505.32

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.