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Finding the Fourth Proportional to 2,800.77, 4,201.11 and 951.87

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Solution

The fourth proportional to 2,800.77, 4,201.11 and 951.87 is: 1,427.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.77 : 4,201.11 = 951.87 : x
  2. Step 2: Convert to fraction form
    2,800.77/4,201.11 = 951.87/x
  3. Step 3: Cross multiply
    2,800.77x = 4,201.11 × 951.87
  4. Step 4: Simplify right side
    2,800.77x = 3,998,910.58
  5. Step 5: Solve for x
    x = 3,998,910.58/2,800.77
  6. Step 6: Final answer
    x = 1,427.79

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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.