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Finding the Third Proportional to 3,424.50 and 5,280.75

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Solution

The third proportional to 3,424.50 and 5,280.75 is: 8,143.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,424.50 : 5,280.75 = 5,280.75 : x
  2. Step 2: Convert to fraction form
    3,424.50/5,280.75 = 5,280.75/x
  3. Step 3: Cross multiply
    3,424.50x = 5,280.75 × 5,280.75
  4. Step 4: Simplify right side
    3,424.50x = 27,886,320.56
  5. Step 5: Solve for x
    x = 27,886,320.56/3,424.50
  6. Step 6: Final answer
    x = 8,143.18

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.