Home / 2,136.35-3,198.74-1,108.19

Finding the Fourth Proportional to 2,136.35, 3,198.74 and 1,108.19

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Solution

The fourth proportional to 2,136.35, 3,198.74 and 1,108.19 is: 1,659.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.35 : 3,198.74 = 1,108.19 : x
  2. Step 2: Convert to fraction form
    2,136.35/3,198.74 = 1,108.19/x
  3. Step 3: Cross multiply
    2,136.35x = 3,198.74 × 1,108.19
  4. Step 4: Simplify right side
    2,136.35x = 3,544,806.14
  5. Step 5: Solve for x
    x = 3,544,806.14/2,136.35
  6. Step 6: Final answer
    x = 1,659.28

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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.