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Finding the Third Proportional to 1,909 and 3,310

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Solution

The third proportional to 1,909 and 3,310 is: 5,739.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909 : 3,310 = 3,310 : x
  2. Step 2: Convert to fraction form
    1,909/3,310 = 3,310/x
  3. Step 3: Cross multiply
    1,909x = 3,310 × 3,310
  4. Step 4: Simplify right side
    1,909x = 10,956,100
  5. Step 5: Solve for x
    x = 10,956,100/1,909
  6. Step 6: Final answer
    x = 5,739.18

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Why These Related Problems?

These problems maintain the same ratio (1.73) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.