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Finding the Third Proportional to 1,621.69 and 2,508.19

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Solution

The third proportional to 1,621.69 and 2,508.19 is: 3,879.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.69 : 2,508.19 = 2,508.19 : x
  2. Step 2: Convert to fraction form
    1,621.69/2,508.19 = 2,508.19/x
  3. Step 3: Cross multiply
    1,621.69x = 2,508.19 × 2,508.19
  4. Step 4: Simplify right side
    1,621.69x = 6,291,004.54
  5. Step 5: Solve for x
    x = 6,291,004.54/1,621.69
  6. Step 6: Final answer
    x = 3,879.30

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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.