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Finding the Third Proportional to 3,720.50 and 5,765.75

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Solution

The third proportional to 3,720.50 and 5,765.75 is: 8,935.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.50 : 5,765.75 = 5,765.75 : x
  2. Step 2: Convert to fraction form
    3,720.50/5,765.75 = 5,765.75/x
  3. Step 3: Cross multiply
    3,720.50x = 5,765.75 × 5,765.75
  4. Step 4: Simplify right side
    3,720.50x = 33,243,873.06
  5. Step 5: Solve for x
    x = 33,243,873.06/3,720.50
  6. Step 6: Final answer
    x = 8,935.32

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.