Home / 3,993.40-5,512.62-2,578.60

Finding the Fourth Proportional to 3,993.40, 5,512.62 and 2,578.60

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Solution

The fourth proportional to 3,993.40, 5,512.62 and 2,578.60 is: 3,559.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.40 : 5,512.62 = 2,578.60 : x
  2. Step 2: Convert to fraction form
    3,993.40/5,512.62 = 2,578.60/x
  3. Step 3: Cross multiply
    3,993.40x = 5,512.62 × 2,578.60
  4. Step 4: Simplify right side
    3,993.40x = 14,214,841.93
  5. Step 5: Solve for x
    x = 14,214,841.93/3,993.40
  6. Step 6: Final answer
    x = 3,559.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.