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Finding the Third Proportional to 1,347 and 2,945

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Solution

The third proportional to 1,347 and 2,945 is: 6,438.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347 : 2,945 = 2,945 : x
  2. Step 2: Convert to fraction form
    1,347/2,945 = 2,945/x
  3. Step 3: Cross multiply
    1,347x = 2,945 × 2,945
  4. Step 4: Simplify right side
    1,347x = 8,673,025
  5. Step 5: Solve for x
    x = 8,673,025/1,347
  6. Step 6: Final answer
    x = 6,438.77

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.