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Finding the Third Proportional to 2,689.50 and 4,226.25

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Solution

The third proportional to 2,689.50 and 4,226.25 is: 6,641.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,689.50 : 4,226.25 = 4,226.25 : x
  2. Step 2: Convert to fraction form
    2,689.50/4,226.25 = 4,226.25/x
  3. Step 3: Cross multiply
    2,689.50x = 4,226.25 × 4,226.25
  4. Step 4: Simplify right side
    2,689.50x = 17,861,189.06
  5. Step 5: Solve for x
    x = 17,861,189.06/2,689.50
  6. Step 6: Final answer
    x = 6,641.08

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.