Home / 3,415.20-5,122.50-949.86

Finding the Fourth Proportional to 3,415.20, 5,122.50 and 949.86

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Solution

The fourth proportional to 3,415.20, 5,122.50 and 949.86 is: 1,424.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.20 : 5,122.50 = 949.86 : x
  2. Step 2: Convert to fraction form
    3,415.20/5,122.50 = 949.86/x
  3. Step 3: Cross multiply
    3,415.20x = 5,122.50 × 949.86
  4. Step 4: Simplify right side
    3,415.20x = 4,865,657.85
  5. Step 5: Solve for x
    x = 4,865,657.85/3,415.20
  6. Step 6: Final answer
    x = 1,424.71

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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.