Home / 5,175.20-7,763.80-2,213.60

Finding the Fourth Proportional to 5,175.20, 7,763.80 and 2,213.60

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Solution

The fourth proportional to 5,175.20, 7,763.80 and 2,213.60 is: 3,320.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.20 : 7,763.80 = 2,213.60 : x
  2. Step 2: Convert to fraction form
    5,175.20/7,763.80 = 2,213.60/x
  3. Step 3: Cross multiply
    5,175.20x = 7,763.80 × 2,213.60
  4. Step 4: Simplify right side
    5,175.20x = 17,185,947.68
  5. Step 5: Solve for x
    x = 17,185,947.68/5,175.20
  6. Step 6: Final answer
    x = 3,320.83

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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.