Home / 1,984.21-2,738.15-1,198.12

Finding the Fourth Proportional to 1,984.21, 2,738.15 and 1,198.12

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Solution

The fourth proportional to 1,984.21, 2,738.15 and 1,198.12 is: 1,653.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,984.21 : 2,738.15 = 1,198.12 : x
  2. Step 2: Convert to fraction form
    1,984.21/2,738.15 = 1,198.12/x
  3. Step 3: Cross multiply
    1,984.21x = 2,738.15 × 1,198.12
  4. Step 4: Simplify right side
    1,984.21x = 3,280,626.29
  5. Step 5: Solve for x
    x = 3,280,626.29/1,984.21
  6. Step 6: Final answer
    x = 1,653.37

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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.