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Finding the Fourth Proportional to 5,608.05, 8,402.80 and 3,961.77

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Solution

The fourth proportional to 5,608.05, 8,402.80 and 3,961.77 is: 5,936.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,608.05 : 8,402.80 = 3,961.77 : x
  2. Step 2: Convert to fraction form
    5,608.05/8,402.80 = 3,961.77/x
  3. Step 3: Cross multiply
    5,608.05x = 8,402.80 × 3,961.77
  4. Step 4: Simplify right side
    5,608.05x = 33,289,960.96
  5. Step 5: Solve for x
    x = 33,289,960.96/5,608.05
  6. Step 6: Final answer
    x = 5,936.10

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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.