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Finding the Fourth Proportional to 5,879.56, 8,821.35 and 3,685.66

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Solution

The fourth proportional to 5,879.56, 8,821.35 and 3,685.66 is: 5,529.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,879.56 : 8,821.35 = 3,685.66 : x
  2. Step 2: Convert to fraction form
    5,879.56/8,821.35 = 3,685.66/x
  3. Step 3: Cross multiply
    5,879.56x = 8,821.35 × 3,685.66
  4. Step 4: Simplify right side
    5,879.56x = 32,512,496.84
  5. Step 5: Solve for x
    x = 32,512,496.84/5,879.56
  6. Step 6: Final answer
    x = 5,529.75

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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.