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Finding the Third Proportional to 3,318.75 and 4,208.63

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Solution

The third proportional to 3,318.75 and 4,208.63 is: 5,337.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318.75 : 4,208.63 = 4,208.63 : x
  2. Step 2: Convert to fraction form
    3,318.75/4,208.63 = 4,208.63/x
  3. Step 3: Cross multiply
    3,318.75x = 4,208.63 × 4,208.63
  4. Step 4: Simplify right side
    3,318.75x = 17,712,524.39
  5. Step 5: Solve for x
    x = 17,712,524.39/3,318.75
  6. Step 6: Final answer
    x = 5,337.11

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.