Home / 3,981.57-5,972.36-1,208.26

Finding the Fourth Proportional to 3,981.57, 5,972.36 and 1,208.26

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Solution

The fourth proportional to 3,981.57, 5,972.36 and 1,208.26 is: 1,812.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,981.57 : 5,972.36 = 1,208.26 : x
  2. Step 2: Convert to fraction form
    3,981.57/5,972.36 = 1,208.26/x
  3. Step 3: Cross multiply
    3,981.57x = 5,972.36 × 1,208.26
  4. Step 4: Simplify right side
    3,981.57x = 7,216,163.69
  5. Step 5: Solve for x
    x = 7,216,163.69/3,981.57
  6. Step 6: Final answer
    x = 1,812.39

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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.