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Finding the Third Proportional to 986.81 and 2,149.13

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Solution

The third proportional to 986.81 and 2,149.13 is: 4,680.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    986.81 : 2,149.13 = 2,149.13 : x
  2. Step 2: Convert to fraction form
    986.81/2,149.13 = 2,149.13/x
  3. Step 3: Cross multiply
    986.81x = 2,149.13 × 2,149.13
  4. Step 4: Simplify right side
    986.81x = 4,618,738.27
  5. Step 5: Solve for x
    x = 4,618,738.27/986.81
  6. Step 6: Final answer
    x = 4,680.46

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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.