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Finding the Third Proportional to 891.38 and 1,371.84

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Solution

The third proportional to 891.38 and 1,371.84 is: 2,111.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    891.38 : 1,371.84 = 1,371.84 : x
  2. Step 2: Convert to fraction form
    891.38/1,371.84 = 1,371.84/x
  3. Step 3: Cross multiply
    891.38x = 1,371.84 × 1,371.84
  4. Step 4: Simplify right side
    891.38x = 1,881,955.27
  5. Step 5: Solve for x
    x = 1,881,955.27/891.38
  6. Step 6: Final answer
    x = 2,111.29

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.