Home / 3,880.81-5,355.71-2,202.31

Finding the Fourth Proportional to 3,880.81, 5,355.71 and 2,202.31

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Solution

The fourth proportional to 3,880.81, 5,355.71 and 2,202.31 is: 3,039.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.81 : 5,355.71 = 2,202.31 : x
  2. Step 2: Convert to fraction form
    3,880.81/5,355.71 = 2,202.31/x
  3. Step 3: Cross multiply
    3,880.81x = 5,355.71 × 2,202.31
  4. Step 4: Simplify right side
    3,880.81x = 11,794,922.68
  5. Step 5: Solve for x
    x = 11,794,922.68/3,880.81
  6. Step 6: Final answer
    x = 3,039.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.