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Finding the Third Proportional to 4,128 and 5,677

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Solution

The third proportional to 4,128 and 5,677 is: 7,807.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,128 : 5,677 = 5,677 : x
  2. Step 2: Convert to fraction form
    4,128/5,677 = 5,677/x
  3. Step 3: Cross multiply
    4,128x = 5,677 × 5,677
  4. Step 4: Simplify right side
    4,128x = 32,228,329
  5. Step 5: Solve for x
    x = 32,228,329/4,128
  6. Step 6: Final answer
    x = 7,807.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.