Home / 3,163.90-4,747.20-1,519.60

Finding the Fourth Proportional to 3,163.90, 4,747.20 and 1,519.60

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Solution

The fourth proportional to 3,163.90, 4,747.20 and 1,519.60 is: 2,280.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,163.90 : 4,747.20 = 1,519.60 : x
  2. Step 2: Convert to fraction form
    3,163.90/4,747.20 = 1,519.60/x
  3. Step 3: Cross multiply
    3,163.90x = 4,747.20 × 1,519.60
  4. Step 4: Simplify right side
    3,163.90x = 7,213,845.12
  5. Step 5: Solve for x
    x = 7,213,845.12/3,163.90
  6. Step 6: Final answer
    x = 2,280.05

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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.