Home / 3,220.43-4,444.89-1,961.90

Finding the Fourth Proportional to 3,220.43, 4,444.89 and 1,961.90

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Solution

The fourth proportional to 3,220.43, 4,444.89 and 1,961.90 is: 2,707.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.43 : 4,444.89 = 1,961.90 : x
  2. Step 2: Convert to fraction form
    3,220.43/4,444.89 = 1,961.90/x
  3. Step 3: Cross multiply
    3,220.43x = 4,444.89 × 1,961.90
  4. Step 4: Simplify right side
    3,220.43x = 8,720,429.69
  5. Step 5: Solve for x
    x = 8,720,429.69/3,220.43
  6. Step 6: Final answer
    x = 2,707.85

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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.