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Finding the Third Proportional to 1,698.38 and 2,613.66

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Solution

The third proportional to 1,698.38 and 2,613.66 is: 4,022.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,698.38 : 2,613.66 = 2,613.66 : x
  2. Step 2: Convert to fraction form
    1,698.38/2,613.66 = 2,613.66/x
  3. Step 3: Cross multiply
    1,698.38x = 2,613.66 × 2,613.66
  4. Step 4: Simplify right side
    1,698.38x = 6,831,198.99
  5. Step 5: Solve for x
    x = 6,831,198.99/1,698.38
  6. Step 6: Final answer
    x = 4,022.20

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.