Home / 3,442.50-5,163.62-2,978.78

Finding the Fourth Proportional to 3,442.50, 5,163.62 and 2,978.78

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Solution

The fourth proportional to 3,442.50, 5,163.62 and 2,978.78 is: 4,468.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,442.50 : 5,163.62 = 2,978.78 : x
  2. Step 2: Convert to fraction form
    3,442.50/5,163.62 = 2,978.78/x
  3. Step 3: Cross multiply
    3,442.50x = 5,163.62 × 2,978.78
  4. Step 4: Simplify right side
    3,442.50x = 15,381,247.27
  5. Step 5: Solve for x
    x = 15,381,247.27/3,442.50
  6. Step 6: Final answer
    x = 4,468.05

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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.