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Finding the Fourth Proportional to 2,800.77, 4,201.11 and 951.86

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Solution

The fourth proportional to 2,800.77, 4,201.11 and 951.86 is: 1,427.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.77 : 4,201.11 = 951.86 : x
  2. Step 2: Convert to fraction form
    2,800.77/4,201.11 = 951.86/x
  3. Step 3: Cross multiply
    2,800.77x = 4,201.11 × 951.86
  4. Step 4: Simplify right side
    2,800.77x = 3,998,847.56
  5. Step 5: Solve for x
    x = 3,998,847.56/2,800.77
  6. Step 6: Final answer
    x = 1,427.77

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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.