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Finding the Third Proportional to 910.92 and 1,961.23

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Solution

The third proportional to 910.92 and 1,961.23 is: 4,222.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    910.92 : 1,961.23 = 1,961.23 : x
  2. Step 2: Convert to fraction form
    910.92/1,961.23 = 1,961.23/x
  3. Step 3: Cross multiply
    910.92x = 1,961.23 × 1,961.23
  4. Step 4: Simplify right side
    910.92x = 3,846,409.63
  5. Step 5: Solve for x
    x = 3,846,409.63/910.92
  6. Step 6: Final answer
    x = 4,222.55

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.