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Finding the Third Proportional to 6,123 and 6,649.50

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Solution

The third proportional to 6,123 and 6,649.50 is: 7,221.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,123 : 6,649.50 = 6,649.50 : x
  2. Step 2: Convert to fraction form
    6,123/6,649.50 = 6,649.50/x
  3. Step 3: Cross multiply
    6,123x = 6,649.50 × 6,649.50
  4. Step 4: Simplify right side
    6,123x = 44,215,850.25
  5. Step 5: Solve for x
    x = 44,215,850.25/6,123
  6. Step 6: Final answer
    x = 7,221.27

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.