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Finding the Third Proportional to 1,850 and 3,986

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Solution

The third proportional to 1,850 and 3,986 is: 8,588.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,850 : 3,986 = 3,986 : x
  2. Step 2: Convert to fraction form
    1,850/3,986 = 3,986/x
  3. Step 3: Cross multiply
    1,850x = 3,986 × 3,986
  4. Step 4: Simplify right side
    1,850x = 15,888,196
  5. Step 5: Solve for x
    x = 15,888,196/1,850
  6. Step 6: Final answer
    x = 8,588.21

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.