Home / 3,982.80-5,971.48-1,901.68

Finding the Fourth Proportional to 3,982.80, 5,971.48 and 1,901.68

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Solution

The fourth proportional to 3,982.80, 5,971.48 and 1,901.68 is: 2,851.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982.80 : 5,971.48 = 1,901.68 : x
  2. Step 2: Convert to fraction form
    3,982.80/5,971.48 = 1,901.68/x
  3. Step 3: Cross multiply
    3,982.80x = 5,971.48 × 1,901.68
  4. Step 4: Simplify right side
    3,982.80x = 11,355,844.09
  5. Step 5: Solve for x
    x = 11,355,844.09/3,982.80
  6. Step 6: Final answer
    x = 2,851.22

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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.