Home / 3,618.97-5,431.07-1,539.55

Finding the Fourth Proportional to 3,618.97, 5,431.07 and 1,539.55

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Solution

The fourth proportional to 3,618.97, 5,431.07 and 1,539.55 is: 2,310.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.97 : 5,431.07 = 1,539.55 : x
  2. Step 2: Convert to fraction form
    3,618.97/5,431.07 = 1,539.55/x
  3. Step 3: Cross multiply
    3,618.97x = 5,431.07 × 1,539.55
  4. Step 4: Simplify right side
    3,618.97x = 8,361,382.54
  5. Step 5: Solve for x
    x = 8,361,382.54/3,618.97
  6. Step 6: Final answer
    x = 2,310.43

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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.