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Finding the Fourth Proportional to 5,906.87, 8,859.32 and 2,157.89

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Solution

The fourth proportional to 5,906.87, 8,859.32 and 2,157.89 is: 3,236.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,906.87 : 8,859.32 = 2,157.89 : x
  2. Step 2: Convert to fraction form
    5,906.87/8,859.32 = 2,157.89/x
  3. Step 3: Cross multiply
    5,906.87x = 8,859.32 × 2,157.89
  4. Step 4: Simplify right side
    5,906.87x = 19,117,453.01
  5. Step 5: Solve for x
    x = 19,117,453.01/5,906.87
  6. Step 6: Final answer
    x = 3,236.48

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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.