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Finding the Third Proportional to 1,917.42 and 4,028.48

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Solution

The third proportional to 1,917.42 and 4,028.48 is: 8,463.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.42 : 4,028.48 = 4,028.48 : x
  2. Step 2: Convert to fraction form
    1,917.42/4,028.48 = 4,028.48/x
  3. Step 3: Cross multiply
    1,917.42x = 4,028.48 × 4,028.48
  4. Step 4: Simplify right side
    1,917.42x = 16,228,686.36
  5. Step 5: Solve for x
    x = 16,228,686.36/1,917.42
  6. Step 6: Final answer
    x = 8,463.81

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.