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Finding the Third Proportional to 851 and 1,779

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Solution

The third proportional to 851 and 1,779 is: 3,718.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    851 : 1,779 = 1,779 : x
  2. Step 2: Convert to fraction form
    851/1,779 = 1,779/x
  3. Step 3: Cross multiply
    851x = 1,779 × 1,779
  4. Step 4: Simplify right side
    851x = 3,164,841
  5. Step 5: Solve for x
    x = 3,164,841/851
  6. Step 6: Final answer
    x = 3,718.97

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.