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Finding the Third Proportional to 1,664.50 and 3,617

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Solution

The third proportional to 1,664.50 and 3,617 is: 7,859.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664.50 : 3,617 = 3,617 : x
  2. Step 2: Convert to fraction form
    1,664.50/3,617 = 3,617/x
  3. Step 3: Cross multiply
    1,664.50x = 3,617 × 3,617
  4. Step 4: Simplify right side
    1,664.50x = 13,082,689
  5. Step 5: Solve for x
    x = 13,082,689/1,664.50
  6. Step 6: Final answer
    x = 7,859.83

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.