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Finding the Third Proportional to 2,211 and 4,066.50

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Solution

The third proportional to 2,211 and 4,066.50 is: 7,479.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211 : 4,066.50 = 4,066.50 : x
  2. Step 2: Convert to fraction form
    2,211/4,066.50 = 4,066.50/x
  3. Step 3: Cross multiply
    2,211x = 4,066.50 × 4,066.50
  4. Step 4: Simplify right side
    2,211x = 16,536,422.25
  5. Step 5: Solve for x
    x = 16,536,422.25/2,211
  6. Step 6: Final answer
    x = 7,479.16

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Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.