Home / 3,815.20-5,724.60-1,625.80

Finding the Fourth Proportional to 3,815.20, 5,724.60 and 1,625.80

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Solution

The fourth proportional to 3,815.20, 5,724.60 and 1,625.80 is: 2,439.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.20 : 5,724.60 = 1,625.80 : x
  2. Step 2: Convert to fraction form
    3,815.20/5,724.60 = 1,625.80/x
  3. Step 3: Cross multiply
    3,815.20x = 5,724.60 × 1,625.80
  4. Step 4: Simplify right side
    3,815.20x = 9,307,054.68
  5. Step 5: Solve for x
    x = 9,307,054.68/3,815.20
  6. Step 6: Final answer
    x = 2,439.47

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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.