Home / 3,100.80-4,651.20-2,760.60

Finding the Fourth Proportional to 3,100.80, 4,651.20 and 2,760.60

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Solution

The fourth proportional to 3,100.80, 4,651.20 and 2,760.60 is: 4,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,100.80 : 4,651.20 = 2,760.60 : x
  2. Step 2: Convert to fraction form
    3,100.80/4,651.20 = 2,760.60/x
  3. Step 3: Cross multiply
    3,100.80x = 4,651.20 × 2,760.60
  4. Step 4: Simplify right side
    3,100.80x = 12,840,102.72
  5. Step 5: Solve for x
    x = 12,840,102.72/3,100.80
  6. Step 6: Final answer
    x = 4,140.90

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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.