Home / 2,079.80-3,105.22-1,872.44

Finding the Fourth Proportional to 2,079.80, 3,105.22 and 1,872.44

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Solution

The fourth proportional to 2,079.80, 3,105.22 and 1,872.44 is: 2,795.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.80 : 3,105.22 = 1,872.44 : x
  2. Step 2: Convert to fraction form
    2,079.80/3,105.22 = 1,872.44/x
  3. Step 3: Cross multiply
    2,079.80x = 3,105.22 × 1,872.44
  4. Step 4: Simplify right side
    2,079.80x = 5,814,338.14
  5. Step 5: Solve for x
    x = 5,814,338.14/2,079.80
  6. Step 6: Final answer
    x = 2,795.62

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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.