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Finding the Third Proportional to 2,986 and 6,518

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Solution

The third proportional to 2,986 and 6,518 is: 14,227.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,986 : 6,518 = 6,518 : x
  2. Step 2: Convert to fraction form
    2,986/6,518 = 6,518/x
  3. Step 3: Cross multiply
    2,986x = 6,518 × 6,518
  4. Step 4: Simplify right side
    2,986x = 42,484,324
  5. Step 5: Solve for x
    x = 42,484,324/2,986
  6. Step 6: Final answer
    x = 14,227.84

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.