Home / 3,840.22-5,299.26-2,161.90

Finding the Fourth Proportional to 3,840.22, 5,299.26 and 2,161.90

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Solution

The fourth proportional to 3,840.22, 5,299.26 and 2,161.90 is: 2,983.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,840.22 : 5,299.26 = 2,161.90 : x
  2. Step 2: Convert to fraction form
    3,840.22/5,299.26 = 2,161.90/x
  3. Step 3: Cross multiply
    3,840.22x = 5,299.26 × 2,161.90
  4. Step 4: Simplify right side
    3,840.22x = 11,456,470.19
  5. Step 5: Solve for x
    x = 11,456,470.19/3,840.22
  6. Step 6: Final answer
    x = 2,983.28

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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.