Home / 8,136.75-12,205.26-3,519.75

Finding the Fourth Proportional to 8,136.75, 12,205.26 and 3,519.75

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Solution

The fourth proportional to 8,136.75, 12,205.26 and 3,519.75 is: 5,279.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,136.75 : 12,205.26 = 3,519.75 : x
  2. Step 2: Convert to fraction form
    8,136.75/12,205.26 = 3,519.75/x
  3. Step 3: Cross multiply
    8,136.75x = 12,205.26 × 3,519.75
  4. Step 4: Simplify right side
    8,136.75x = 42,959,463.89
  5. Step 5: Solve for x
    x = 42,959,463.89/8,136.75
  6. Step 6: Final answer
    x = 5,279.68

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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.