Home / 3,136.72-4,704.40-1,286.05

Finding the Fourth Proportional to 3,136.72, 4,704.40 and 1,286.05

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Solution

The fourth proportional to 3,136.72, 4,704.40 and 1,286.05 is: 1,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,136.72 : 4,704.40 = 1,286.05 : x
  2. Step 2: Convert to fraction form
    3,136.72/4,704.40 = 1,286.05/x
  3. Step 3: Cross multiply
    3,136.72x = 4,704.40 × 1,286.05
  4. Step 4: Simplify right side
    3,136.72x = 6,050,093.62
  5. Step 5: Solve for x
    x = 6,050,093.62/3,136.72
  6. Step 6: Final answer
    x = 1,928.80

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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.