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Finding the Third Proportional to 2,140.75 and 4,675.75

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Solution

The third proportional to 2,140.75 and 4,675.75 is: 10,212.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.75 : 4,675.75 = 4,675.75 : x
  2. Step 2: Convert to fraction form
    2,140.75/4,675.75 = 4,675.75/x
  3. Step 3: Cross multiply
    2,140.75x = 4,675.75 × 4,675.75
  4. Step 4: Simplify right side
    2,140.75x = 21,862,638.06
  5. Step 5: Solve for x
    x = 21,862,638.06/2,140.75
  6. Step 6: Final answer
    x = 10,212.61

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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.