Home / 3,480.62-5,219.72-1,400.09

Finding the Fourth Proportional to 3,480.62, 5,219.72 and 1,400.09

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Solution

The fourth proportional to 3,480.62, 5,219.72 and 1,400.09 is: 2,099.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,480.62 : 5,219.72 = 1,400.09 : x
  2. Step 2: Convert to fraction form
    3,480.62/5,219.72 = 1,400.09/x
  3. Step 3: Cross multiply
    3,480.62x = 5,219.72 × 1,400.09
  4. Step 4: Simplify right side
    3,480.62x = 7,308,060.94
  5. Step 5: Solve for x
    x = 7,308,060.94/3,480.62
  6. Step 6: Final answer
    x = 2,099.64

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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.