Home / 3,639.20-5,450.70-3,558.20

Finding the Fourth Proportional to 3,639.20, 5,450.70 and 3,558.20

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Solution

The fourth proportional to 3,639.20, 5,450.70 and 3,558.20 is: 5,329.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,639.20 : 5,450.70 = 3,558.20 : x
  2. Step 2: Convert to fraction form
    3,639.20/5,450.70 = 3,558.20/x
  3. Step 3: Cross multiply
    3,639.20x = 5,450.70 × 3,558.20
  4. Step 4: Simplify right side
    3,639.20x = 19,394,680.74
  5. Step 5: Solve for x
    x = 19,394,680.74/3,639.20
  6. Step 6: Final answer
    x = 5,329.38

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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.