Home / 3,989.60-5,977.80-3,163.52

Finding the Fourth Proportional to 3,989.60, 5,977.80 and 3,163.52

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Solution

The fourth proportional to 3,989.60, 5,977.80 and 3,163.52 is: 4,740.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.60 : 5,977.80 = 3,163.52 : x
  2. Step 2: Convert to fraction form
    3,989.60/5,977.80 = 3,163.52/x
  3. Step 3: Cross multiply
    3,989.60x = 5,977.80 × 3,163.52
  4. Step 4: Simplify right side
    3,989.60x = 18,910,889.86
  5. Step 5: Solve for x
    x = 18,910,889.86/3,989.60
  6. Step 6: Final answer
    x = 4,740.05

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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.