Home / 5,419.68-8,138.52-3,380.64

Finding the Fourth Proportional to 5,419.68, 8,138.52 and 3,380.64

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Solution

The fourth proportional to 5,419.68, 8,138.52 and 3,380.64 is: 5,076.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.68 : 8,138.52 = 3,380.64 : x
  2. Step 2: Convert to fraction form
    5,419.68/8,138.52 = 3,380.64/x
  3. Step 3: Cross multiply
    5,419.68x = 8,138.52 × 3,380.64
  4. Step 4: Simplify right side
    5,419.68x = 27,513,406.25
  5. Step 5: Solve for x
    x = 27,513,406.25/5,419.68
  6. Step 6: Final answer
    x = 5,076.57

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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.