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Finding the Third Proportional to 2,131.75 and 3,116.75

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Solution

The third proportional to 2,131.75 and 3,116.75 is: 4,556.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.75 : 3,116.75 = 3,116.75 : x
  2. Step 2: Convert to fraction form
    2,131.75/3,116.75 = 3,116.75/x
  3. Step 3: Cross multiply
    2,131.75x = 3,116.75 × 3,116.75
  4. Step 4: Simplify right side
    2,131.75x = 9,714,130.56
  5. Step 5: Solve for x
    x = 9,714,130.56/2,131.75
  6. Step 6: Final answer
    x = 4,556.88

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.