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Finding the Third Proportional to 3,438 and 5,133.75

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Solution

The third proportional to 3,438 and 5,133.75 is: 7,665.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,438 : 5,133.75 = 5,133.75 : x
  2. Step 2: Convert to fraction form
    3,438/5,133.75 = 5,133.75/x
  3. Step 3: Cross multiply
    3,438x = 5,133.75 × 5,133.75
  4. Step 4: Simplify right side
    3,438x = 26,355,389.06
  5. Step 5: Solve for x
    x = 26,355,389.06/3,438
  6. Step 6: Final answer
    x = 7,665.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.