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Finding the Third Proportional to 3,555 and 7,690.50

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Solution

The third proportional to 3,555 and 7,690.50 is: 16,636.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,555 : 7,690.50 = 7,690.50 : x
  2. Step 2: Convert to fraction form
    3,555/7,690.50 = 7,690.50/x
  3. Step 3: Cross multiply
    3,555x = 7,690.50 × 7,690.50
  4. Step 4: Simplify right side
    3,555x = 59,143,790.25
  5. Step 5: Solve for x
    x = 59,143,790.25/3,555
  6. Step 6: Final answer
    x = 16,636.79

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.