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Finding the Fourth Proportional to 2,800.06, 4,198.87 and 851.81

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Solution

The fourth proportional to 2,800.06, 4,198.87 and 851.81 is: 1,277.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.06 : 4,198.87 = 851.81 : x
  2. Step 2: Convert to fraction form
    2,800.06/4,198.87 = 851.81/x
  3. Step 3: Cross multiply
    2,800.06x = 4,198.87 × 851.81
  4. Step 4: Simplify right side
    2,800.06x = 3,576,618.46
  5. Step 5: Solve for x
    x = 3,576,618.46/2,800.06
  6. Step 6: Final answer
    x = 1,277.34

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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.