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Finding the Third Proportional to 1,789 and 3,851

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Solution

The third proportional to 1,789 and 3,851 is: 8,289.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789 : 3,851 = 3,851 : x
  2. Step 2: Convert to fraction form
    1,789/3,851 = 3,851/x
  3. Step 3: Cross multiply
    1,789x = 3,851 × 3,851
  4. Step 4: Simplify right side
    1,789x = 14,830,201
  5. Step 5: Solve for x
    x = 14,830,201/1,789
  6. Step 6: Final answer
    x = 8,289.66

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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.