Home / 2,195.91-3,278.21-2,119.02

Finding the Fourth Proportional to 2,195.91, 3,278.21 and 2,119.02

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Solution

The fourth proportional to 2,195.91, 3,278.21 and 2,119.02 is: 3,163.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,195.91 : 3,278.21 = 2,119.02 : x
  2. Step 2: Convert to fraction form
    2,195.91/3,278.21 = 2,119.02/x
  3. Step 3: Cross multiply
    2,195.91x = 3,278.21 × 2,119.02
  4. Step 4: Simplify right side
    2,195.91x = 6,946,581.96
  5. Step 5: Solve for x
    x = 6,946,581.96/2,195.91
  6. Step 6: Final answer
    x = 3,163.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.