Home / 2,136.21-3,195.81-1,520.21

Finding the Fourth Proportional to 2,136.21, 3,195.81 and 1,520.21

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Solution

The fourth proportional to 2,136.21, 3,195.81 and 1,520.21 is: 2,274.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,136.21 : 3,195.81 = 1,520.21 : x
  2. Step 2: Convert to fraction form
    2,136.21/3,195.81 = 1,520.21/x
  3. Step 3: Cross multiply
    2,136.21x = 3,195.81 × 1,520.21
  4. Step 4: Simplify right side
    2,136.21x = 4,858,286.34
  5. Step 5: Solve for x
    x = 4,858,286.34/2,136.21
  6. Step 6: Final answer
    x = 2,274.26

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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.