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Finding the Third Proportional to 5,123 and 8,175

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Solution

The third proportional to 5,123 and 8,175 is: 13,045.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,123 : 8,175 = 8,175 : x
  2. Step 2: Convert to fraction form
    5,123/8,175 = 8,175/x
  3. Step 3: Cross multiply
    5,123x = 8,175 × 8,175
  4. Step 4: Simplify right side
    5,123x = 66,830,625
  5. Step 5: Solve for x
    x = 66,830,625/5,123
  6. Step 6: Final answer
    x = 13,045.21

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.