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Finding the Third Proportional to 2,309 and 3,487.75

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Solution

The third proportional to 2,309 and 3,487.75 is: 5,268.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,309 : 3,487.75 = 3,487.75 : x
  2. Step 2: Convert to fraction form
    2,309/3,487.75 = 3,487.75/x
  3. Step 3: Cross multiply
    2,309x = 3,487.75 × 3,487.75
  4. Step 4: Simplify right side
    2,309x = 12,164,400.06
  5. Step 5: Solve for x
    x = 12,164,400.06/2,309
  6. Step 6: Final answer
    x = 5,268.25

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.