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Finding the Third Proportional to 2,811 and 5,541

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Solution

The third proportional to 2,811 and 5,541 is: 10,922.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811 : 5,541 = 5,541 : x
  2. Step 2: Convert to fraction form
    2,811/5,541 = 5,541/x
  3. Step 3: Cross multiply
    2,811x = 5,541 × 5,541
  4. Step 4: Simplify right side
    2,811x = 30,702,681
  5. Step 5: Solve for x
    x = 30,702,681/2,811
  6. Step 6: Final answer
    x = 10,922.33

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.