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Finding the Third Proportional to 2,166 and 3,312.75

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Solution

The third proportional to 2,166 and 3,312.75 is: 5,066.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,166 : 3,312.75 = 3,312.75 : x
  2. Step 2: Convert to fraction form
    2,166/3,312.75 = 3,312.75/x
  3. Step 3: Cross multiply
    2,166x = 3,312.75 × 3,312.75
  4. Step 4: Simplify right side
    2,166x = 10,974,312.56
  5. Step 5: Solve for x
    x = 10,974,312.56/2,166
  6. Step 6: Final answer
    x = 5,066.63

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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.