Home / 3,628.48-5,428.80-3,619.20

Finding the Fourth Proportional to 3,628.48, 5,428.80 and 3,619.20

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Solution

The fourth proportional to 3,628.48, 5,428.80 and 3,619.20 is: 5,414.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,628.48 : 5,428.80 = 3,619.20 : x
  2. Step 2: Convert to fraction form
    3,628.48/5,428.80 = 3,619.20/x
  3. Step 3: Cross multiply
    3,628.48x = 5,428.80 × 3,619.20
  4. Step 4: Simplify right side
    3,628.48x = 19,647,912.96
  5. Step 5: Solve for x
    x = 19,647,912.96/3,628.48
  6. Step 6: Final answer
    x = 5,414.92

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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.