Home / 3,381.54-5,072.32-2,218.90

Finding the Fourth Proportional to 3,381.54, 5,072.32 and 2,218.90

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Solution

The fourth proportional to 3,381.54, 5,072.32 and 2,218.90 is: 3,328.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,381.54 : 5,072.32 = 2,218.90 : x
  2. Step 2: Convert to fraction form
    3,381.54/5,072.32 = 2,218.90/x
  3. Step 3: Cross multiply
    3,381.54x = 5,072.32 × 2,218.90
  4. Step 4: Simplify right side
    3,381.54x = 11,254,972.43
  5. Step 5: Solve for x
    x = 11,254,972.43/3,381.54
  6. Step 6: Final answer
    x = 3,328.35

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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.