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Finding the Third Proportional to 2,786 and 4,274

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Solution

The third proportional to 2,786 and 4,274 is: 6,556.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786 : 4,274 = 4,274 : x
  2. Step 2: Convert to fraction form
    2,786/4,274 = 4,274/x
  3. Step 3: Cross multiply
    2,786x = 4,274 × 4,274
  4. Step 4: Simplify right side
    2,786x = 18,267,076
  5. Step 5: Solve for x
    x = 18,267,076/2,786
  6. Step 6: Final answer
    x = 6,556.74

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.