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Finding the Third Proportional to 5,158 and 5,918

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Solution

The third proportional to 5,158 and 5,918 is: 6,789.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158 : 5,918 = 5,918 : x
  2. Step 2: Convert to fraction form
    5,158/5,918 = 5,918/x
  3. Step 3: Cross multiply
    5,158x = 5,918 × 5,918
  4. Step 4: Simplify right side
    5,158x = 35,022,724
  5. Step 5: Solve for x
    x = 35,022,724/5,158
  6. Step 6: Final answer
    x = 6,789.98

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.