Home / 3,845.25-5,768.40-1,379.55

Finding the Fourth Proportional to 3,845.25, 5,768.40 and 1,379.55

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Solution

The fourth proportional to 3,845.25, 5,768.40 and 1,379.55 is: 2,069.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,845.25 : 5,768.40 = 1,379.55 : x
  2. Step 2: Convert to fraction form
    3,845.25/5,768.40 = 1,379.55/x
  3. Step 3: Cross multiply
    3,845.25x = 5,768.40 × 1,379.55
  4. Step 4: Simplify right side
    3,845.25x = 7,957,796.22
  5. Step 5: Solve for x
    x = 7,957,796.22/3,845.25
  6. Step 6: Final answer
    x = 2,069.51

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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.