Home / 2,080.41-3,120.60-1,388.43

Finding the Fourth Proportional to 2,080.41, 3,120.60 and 1,388.43

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Solution

The fourth proportional to 2,080.41, 3,120.60 and 1,388.43 is: 2,082.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.41 : 3,120.60 = 1,388.43 : x
  2. Step 2: Convert to fraction form
    2,080.41/3,120.60 = 1,388.43/x
  3. Step 3: Cross multiply
    2,080.41x = 3,120.60 × 1,388.43
  4. Step 4: Simplify right side
    2,080.41x = 4,332,734.66
  5. Step 5: Solve for x
    x = 4,332,734.66/2,080.41
  6. Step 6: Final answer
    x = 2,082.63

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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.