Home / 5,131.90-7,685.70-3,163.60

Finding the Fourth Proportional to 5,131.90, 7,685.70 and 3,163.60

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Solution

The fourth proportional to 5,131.90, 7,685.70 and 3,163.60 is: 4,737.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.90 : 7,685.70 = 3,163.60 : x
  2. Step 2: Convert to fraction form
    5,131.90/7,685.70 = 3,163.60/x
  3. Step 3: Cross multiply
    5,131.90x = 7,685.70 × 3,163.60
  4. Step 4: Simplify right side
    5,131.90x = 24,314,480.52
  5. Step 5: Solve for x
    x = 24,314,480.52/5,131.90
  6. Step 6: Final answer
    x = 4,737.91

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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.