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Finding the Third Proportional to 1,266 and 2,239.50

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Solution

The third proportional to 1,266 and 2,239.50 is: 3,961.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266 : 2,239.50 = 2,239.50 : x
  2. Step 2: Convert to fraction form
    1,266/2,239.50 = 2,239.50/x
  3. Step 3: Cross multiply
    1,266x = 2,239.50 × 2,239.50
  4. Step 4: Simplify right side
    1,266x = 5,015,360.25
  5. Step 5: Solve for x
    x = 5,015,360.25/1,266
  6. Step 6: Final answer
    x = 3,961.58

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Why These Related Problems?

These problems maintain the same ratio (1.77) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.