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Finding the Fourth Proportional to 8,571.38, 11,830.12 and 4,845.38

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Solution

The fourth proportional to 8,571.38, 11,830.12 and 4,845.38 is: 6,687.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,571.38 : 11,830.12 = 4,845.38 : x
  2. Step 2: Convert to fraction form
    8,571.38/11,830.12 = 4,845.38/x
  3. Step 3: Cross multiply
    8,571.38x = 11,830.12 × 4,845.38
  4. Step 4: Simplify right side
    8,571.38x = 57,321,355.58
  5. Step 5: Solve for x
    x = 57,321,355.58/8,571.38
  6. Step 6: Final answer
    x = 6,687.53

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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.