Home / 5,136.26-7,704.85-1,438.48

Finding the Fourth Proportional to 5,136.26, 7,704.85 and 1,438.48

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Solution

The fourth proportional to 5,136.26, 7,704.85 and 1,438.48 is: 2,157.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.26 : 7,704.85 = 1,438.48 : x
  2. Step 2: Convert to fraction form
    5,136.26/7,704.85 = 1,438.48/x
  3. Step 3: Cross multiply
    5,136.26x = 7,704.85 × 1,438.48
  4. Step 4: Simplify right side
    5,136.26x = 11,083,298.98
  5. Step 5: Solve for x
    x = 11,083,298.98/5,136.26
  6. Step 6: Final answer
    x = 2,157.85

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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.