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Finding the Fourth Proportional to 3,945.82, 5,918.70 and 3,249.67

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Solution

The fourth proportional to 3,945.82, 5,918.70 and 3,249.67 is: 4,874.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.82 : 5,918.70 = 3,249.67 : x
  2. Step 2: Convert to fraction form
    3,945.82/5,918.70 = 3,249.67/x
  3. Step 3: Cross multiply
    3,945.82x = 5,918.70 × 3,249.67
  4. Step 4: Simplify right side
    3,945.82x = 19,233,821.83
  5. Step 5: Solve for x
    x = 19,233,821.83/3,945.82
  6. Step 6: Final answer
    x = 4,874.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.