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Finding the Third Proportional to 3,648 and 5,715.75

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Solution

The third proportional to 3,648 and 5,715.75 is: 8,955.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,648 : 5,715.75 = 5,715.75 : x
  2. Step 2: Convert to fraction form
    3,648/5,715.75 = 5,715.75/x
  3. Step 3: Cross multiply
    3,648x = 5,715.75 × 5,715.75
  4. Step 4: Simplify right side
    3,648x = 32,669,798.06
  5. Step 5: Solve for x
    x = 32,669,798.06/3,648
  6. Step 6: Final answer
    x = 8,955.54

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.