Home / 2,220.35-3,326.84-1,991.41

Finding the Fourth Proportional to 2,220.35, 3,326.84 and 1,991.41

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Solution

The fourth proportional to 2,220.35, 3,326.84 and 1,991.41 is: 2,983.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.35 : 3,326.84 = 1,991.41 : x
  2. Step 2: Convert to fraction form
    2,220.35/3,326.84 = 1,991.41/x
  3. Step 3: Cross multiply
    2,220.35x = 3,326.84 × 1,991.41
  4. Step 4: Simplify right side
    2,220.35x = 6,625,084.17
  5. Step 5: Solve for x
    x = 6,625,084.17/2,220.35
  6. Step 6: Final answer
    x = 2,983.81

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1.5x scale

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.