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Finding the Fourth Proportional to 3,191.00, 4,786.85 and 851.09

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Solution

The fourth proportional to 3,191.00, 4,786.85 and 851.09 is: 1,276.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,191.00 : 4,786.85 = 851.09 : x
  2. Step 2: Convert to fraction form
    3,191.00/4,786.85 = 851.09/x
  3. Step 3: Cross multiply
    3,191.00x = 4,786.85 × 851.09
  4. Step 4: Simplify right side
    3,191.00x = 4,074,018.36
  5. Step 5: Solve for x
    x = 4,074,018.36/3,191.00
  6. Step 6: Final answer
    x = 1,276.72

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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.