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Finding the Third Proportional to 1,906.31 and 2,859.19

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Solution

The third proportional to 1,906.31 and 2,859.19 is: 4,288.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.31 : 2,859.19 = 2,859.19 : x
  2. Step 2: Convert to fraction form
    1,906.31/2,859.19 = 2,859.19/x
  3. Step 3: Cross multiply
    1,906.31x = 2,859.19 × 2,859.19
  4. Step 4: Simplify right side
    1,906.31x = 8,174,953.16
  5. Step 5: Solve for x
    x = 8,174,953.16/1,906.31
  6. Step 6: Final answer
    x = 4,288.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.