Home / 3,982.05-5,972.90-1,208.66

Finding the Fourth Proportional to 3,982.05, 5,972.90 and 1,208.66

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Solution

The fourth proportional to 3,982.05, 5,972.90 and 1,208.66 is: 1,812.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.05 : 5,972.90 = 1,208.66 : x
  2. Step 2: Convert to fraction form
    3,982.05/5,972.90 = 1,208.66/x
  3. Step 3: Cross multiply
    3,982.05x = 5,972.90 × 1,208.66
  4. Step 4: Simplify right side
    3,982.05x = 7,219,203.10
  5. Step 5: Solve for x
    x = 7,219,203.10/3,982.05
  6. Step 6: Final answer
    x = 1,812.94

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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.