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Finding the Fourth Proportional to 6,355.79, 8,771.65 and 3,933.48

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Solution

The fourth proportional to 6,355.79, 8,771.65 and 3,933.48 is: 5,428.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,355.79 : 8,771.65 = 3,933.48 : x
  2. Step 2: Convert to fraction form
    6,355.79/8,771.65 = 3,933.48/x
  3. Step 3: Cross multiply
    6,355.79x = 8,771.65 × 3,933.48
  4. Step 4: Simplify right side
    6,355.79x = 34,503,100.01
  5. Step 5: Solve for x
    x = 34,503,100.01/6,355.79
  6. Step 6: Final answer
    x = 5,428.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.