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Finding the Third Proportional to 2,138.91 and 2,846.39

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Solution

The third proportional to 2,138.91 and 2,846.39 is: 3,787.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,138.91 : 2,846.39 = 2,846.39 : x
  2. Step 2: Convert to fraction form
    2,138.91/2,846.39 = 2,846.39/x
  3. Step 3: Cross multiply
    2,138.91x = 2,846.39 × 2,846.39
  4. Step 4: Simplify right side
    2,138.91x = 8,101,939.59
  5. Step 5: Solve for x
    x = 8,101,939.59/2,138.91
  6. Step 6: Final answer
    x = 3,787.89

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.