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Finding the Third Proportional to 6,851 and 9,790

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Solution

The third proportional to 6,851 and 9,790 is: 13,989.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,851 : 9,790 = 9,790 : x
  2. Step 2: Convert to fraction form
    6,851/9,790 = 9,790/x
  3. Step 3: Cross multiply
    6,851x = 9,790 × 9,790
  4. Step 4: Simplify right side
    6,851x = 95,844,100
  5. Step 5: Solve for x
    x = 95,844,100/6,851
  6. Step 6: Final answer
    x = 13,989.80

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.