Home / 3,419.27-5,129.60-1,079.64

Finding the Fourth Proportional to 3,419.27, 5,129.60 and 1,079.64

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Solution

The fourth proportional to 3,419.27, 5,129.60 and 1,079.64 is: 1,619.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,419.27 : 5,129.60 = 1,079.64 : x
  2. Step 2: Convert to fraction form
    3,419.27/5,129.60 = 1,079.64/x
  3. Step 3: Cross multiply
    3,419.27x = 5,129.60 × 1,079.64
  4. Step 4: Simplify right side
    3,419.27x = 5,538,115.95
  5. Step 5: Solve for x
    x = 5,538,115.95/3,419.27
  6. Step 6: Final answer
    x = 1,619.68

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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.