Home / 3,057.23-4,212.92-2,170.55

Finding the Fourth Proportional to 3,057.23, 4,212.92 and 2,170.55

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Solution

The fourth proportional to 3,057.23, 4,212.92 and 2,170.55 is: 2,991.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.23 : 4,212.92 = 2,170.55 : x
  2. Step 2: Convert to fraction form
    3,057.23/4,212.92 = 2,170.55/x
  3. Step 3: Cross multiply
    3,057.23x = 4,212.92 × 2,170.55
  4. Step 4: Simplify right side
    3,057.23x = 9,144,321.59
  5. Step 5: Solve for x
    x = 9,144,321.59/3,057.23
  6. Step 6: Final answer
    x = 2,991.05

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1.5x scale

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.