Home / 4,120.62-6,180.09-3,431.70

Finding the Fourth Proportional to 4,120.62, 6,180.09 and 3,431.70

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Solution

The fourth proportional to 4,120.62, 6,180.09 and 3,431.70 is: 5,146.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,120.62 : 6,180.09 = 3,431.70 : x
  2. Step 2: Convert to fraction form
    4,120.62/6,180.09 = 3,431.70/x
  3. Step 3: Cross multiply
    4,120.62x = 6,180.09 × 3,431.70
  4. Step 4: Simplify right side
    4,120.62x = 21,208,214.85
  5. Step 5: Solve for x
    x = 21,208,214.85/4,120.62
  6. Step 6: Final answer
    x = 5,146.85

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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.