Home / 3,185.20-4,768.20-2,839.60

Finding the Fourth Proportional to 3,185.20, 4,768.20 and 2,839.60

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Solution

The fourth proportional to 3,185.20, 4,768.20 and 2,839.60 is: 4,250.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.20 : 4,768.20 = 2,839.60 : x
  2. Step 2: Convert to fraction form
    3,185.20/4,768.20 = 2,839.60/x
  3. Step 3: Cross multiply
    3,185.20x = 4,768.20 × 2,839.60
  4. Step 4: Simplify right side
    3,185.20x = 13,539,780.72
  5. Step 5: Solve for x
    x = 13,539,780.72/3,185.20
  6. Step 6: Final answer
    x = 4,250.84

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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.