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Finding the Third Proportional to 4,015.50 and 5,328.75

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Solution

The third proportional to 4,015.50 and 5,328.75 is: 7,071.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,015.50 : 5,328.75 = 5,328.75 : x
  2. Step 2: Convert to fraction form
    4,015.50/5,328.75 = 5,328.75/x
  3. Step 3: Cross multiply
    4,015.50x = 5,328.75 × 5,328.75
  4. Step 4: Simplify right side
    4,015.50x = 28,395,576.56
  5. Step 5: Solve for x
    x = 28,395,576.56/4,015.50
  6. Step 6: Final answer
    x = 7,071.49

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.