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Finding the Third Proportional to 986.06 and 2,131.31

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Solution

The third proportional to 986.06 and 2,131.31 is: 4,606.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    986.06 : 2,131.31 = 2,131.31 : x
  2. Step 2: Convert to fraction form
    986.06/2,131.31 = 2,131.31/x
  3. Step 3: Cross multiply
    986.06x = 2,131.31 × 2,131.31
  4. Step 4: Simplify right side
    986.06x = 4,542,492.97
  5. Step 5: Solve for x
    x = 4,542,492.97/986.06
  6. Step 6: Final answer
    x = 4,606.70

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.