Home / 5,078.87-7,611.38-3,105.19

Finding the Fourth Proportional to 5,078.87, 7,611.38 and 3,105.19

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Solution

The fourth proportional to 5,078.87, 7,611.38 and 3,105.19 is: 4,653.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,078.87 : 7,611.38 = 3,105.19 : x
  2. Step 2: Convert to fraction form
    5,078.87/7,611.38 = 3,105.19/x
  3. Step 3: Cross multiply
    5,078.87x = 7,611.38 × 3,105.19
  4. Step 4: Simplify right side
    5,078.87x = 23,634,755.53
  5. Step 5: Solve for x
    x = 23,634,755.53/5,078.87
  6. Step 6: Final answer
    x = 4,653.55

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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.