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Finding the Third Proportional to 3,128.63 and 6,887.53

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Solution

The third proportional to 3,128.63 and 6,887.53 is: 15,162.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.63 : 6,887.53 = 6,887.53 : x
  2. Step 2: Convert to fraction form
    3,128.63/6,887.53 = 6,887.53/x
  3. Step 3: Cross multiply
    3,128.63x = 6,887.53 × 6,887.53
  4. Step 4: Simplify right side
    3,128.63x = 47,438,086.72
  5. Step 5: Solve for x
    x = 47,438,086.72/3,128.63
  6. Step 6: Final answer
    x = 15,162.60

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.