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Finding the Third Proportional to 988 and 2,281

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Solution

The third proportional to 988 and 2,281 is: 5,266.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    988 : 2,281 = 2,281 : x
  2. Step 2: Convert to fraction form
    988/2,281 = 2,281/x
  3. Step 3: Cross multiply
    988x = 2,281 × 2,281
  4. Step 4: Simplify right side
    988x = 5,202,961
  5. Step 5: Solve for x
    x = 5,202,961/988
  6. Step 6: Final answer
    x = 5,266.15

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.