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Finding the Fourth Proportional to 3,190.54, 4,786.13 and 850.55

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Solution

The fourth proportional to 3,190.54, 4,786.13 and 850.55 is: 1,275.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,190.54 : 4,786.13 = 850.55 : x
  2. Step 2: Convert to fraction form
    3,190.54/4,786.13 = 850.55/x
  3. Step 3: Cross multiply
    3,190.54x = 4,786.13 × 850.55
  4. Step 4: Simplify right side
    3,190.54x = 4,070,821.07
  5. Step 5: Solve for x
    x = 4,070,821.07/3,190.54
  6. Step 6: Final answer
    x = 1,275.90

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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.