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Finding the Third Proportional to 1,268.75 and 2,572.38

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Solution

The third proportional to 1,268.75 and 2,572.38 is: 5,215.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.75 : 2,572.38 = 2,572.38 : x
  2. Step 2: Convert to fraction form
    1,268.75/2,572.38 = 2,572.38/x
  3. Step 3: Cross multiply
    1,268.75x = 2,572.38 × 2,572.38
  4. Step 4: Simplify right side
    1,268.75x = 6,617,113.14
  5. Step 5: Solve for x
    x = 6,617,113.14/1,268.75
  6. Step 6: Final answer
    x = 5,215.46

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.