Home / 3,425.20-5,128.20-3,079.60

Finding the Fourth Proportional to 3,425.20, 5,128.20 and 3,079.60

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Solution

The fourth proportional to 3,425.20, 5,128.20 and 3,079.60 is: 4,610.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.20 : 5,128.20 = 3,079.60 : x
  2. Step 2: Convert to fraction form
    3,425.20/5,128.20 = 3,079.60/x
  3. Step 3: Cross multiply
    3,425.20x = 5,128.20 × 3,079.60
  4. Step 4: Simplify right side
    3,425.20x = 15,792,804.72
  5. Step 5: Solve for x
    x = 15,792,804.72/3,425.20
  6. Step 6: Final answer
    x = 4,610.77

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1.5x scale

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.