Home / 3,481.28-5,218.59-1,289.42

Finding the Fourth Proportional to 3,481.28, 5,218.59 and 1,289.42

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Solution

The fourth proportional to 3,481.28, 5,218.59 and 1,289.42 is: 1,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.28 : 5,218.59 = 1,289.42 : x
  2. Step 2: Convert to fraction form
    3,481.28/5,218.59 = 1,289.42/x
  3. Step 3: Cross multiply
    3,481.28x = 5,218.59 × 1,289.42
  4. Step 4: Simplify right side
    3,481.28x = 6,728,954.32
  5. Step 5: Solve for x
    x = 6,728,954.32/3,481.28
  6. Step 6: Final answer
    x = 1,932.90

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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.