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Finding the Third Proportional to 4,389 and 6,630.75

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Solution

The third proportional to 4,389 and 6,630.75 is: 10,017.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,389 : 6,630.75 = 6,630.75 : x
  2. Step 2: Convert to fraction form
    4,389/6,630.75 = 6,630.75/x
  3. Step 3: Cross multiply
    4,389x = 6,630.75 × 6,630.75
  4. Step 4: Simplify right side
    4,389x = 43,966,845.56
  5. Step 5: Solve for x
    x = 43,966,845.56/4,389
  6. Step 6: Final answer
    x = 10,017.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.