Home / 2,222.80-3,334.96-991.08

Finding the Fourth Proportional to 2,222.80, 3,334.96 and 991.08

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Solution

The fourth proportional to 2,222.80, 3,334.96 and 991.08 is: 1,486.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,222.80 : 3,334.96 = 991.08 : x
  2. Step 2: Convert to fraction form
    2,222.80/3,334.96 = 991.08/x
  3. Step 3: Cross multiply
    2,222.80x = 3,334.96 × 991.08
  4. Step 4: Simplify right side
    2,222.80x = 3,305,212.16
  5. Step 5: Solve for x
    x = 3,305,212.16/2,222.80
  6. Step 6: Final answer
    x = 1,486.96

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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.