Home / 3,399.60-5,100.20-1,319.64

Finding the Fourth Proportional to 3,399.60, 5,100.20 and 1,319.64

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Solution

The fourth proportional to 3,399.60, 5,100.20 and 1,319.64 is: 1,979.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,399.60 : 5,100.20 = 1,319.64 : x
  2. Step 2: Convert to fraction form
    3,399.60/5,100.20 = 1,319.64/x
  3. Step 3: Cross multiply
    3,399.60x = 5,100.20 × 1,319.64
  4. Step 4: Simplify right side
    3,399.60x = 6,730,427.93
  5. Step 5: Solve for x
    x = 6,730,427.93/3,399.60
  6. Step 6: Final answer
    x = 1,979.77

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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.