Home / 3,630.85-5,441.49-1,438.38

Finding the Fourth Proportional to 3,630.85, 5,441.49 and 1,438.38

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Solution

The fourth proportional to 3,630.85, 5,441.49 and 1,438.38 is: 2,155.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.85 : 5,441.49 = 1,438.38 : x
  2. Step 2: Convert to fraction form
    3,630.85/5,441.49 = 1,438.38/x
  3. Step 3: Cross multiply
    3,630.85x = 5,441.49 × 1,438.38
  4. Step 4: Simplify right side
    3,630.85x = 7,826,930.39
  5. Step 5: Solve for x
    x = 7,826,930.39/3,630.85
  6. Step 6: Final answer
    x = 2,155.67

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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.