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Finding the Third Proportional to 901 and 2,191

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Solution

The third proportional to 901 and 2,191 is: 5,327.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    901 : 2,191 = 2,191 : x
  2. Step 2: Convert to fraction form
    901/2,191 = 2,191/x
  3. Step 3: Cross multiply
    901x = 2,191 × 2,191
  4. Step 4: Simplify right side
    901x = 4,800,481
  5. Step 5: Solve for x
    x = 4,800,481/901
  6. Step 6: Final answer
    x = 5,327.95

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Why These Related Problems?

These problems maintain the same ratio (2.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.