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Finding the Fourth Proportional to 8,356.13, 11,531.06 and 5,000.79

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Solution

The fourth proportional to 8,356.13, 11,531.06 and 5,000.79 is: 6,900.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,356.13 : 11,531.06 = 5,000.79 : x
  2. Step 2: Convert to fraction form
    8,356.13/11,531.06 = 5,000.79/x
  3. Step 3: Cross multiply
    8,356.13x = 11,531.06 × 5,000.79
  4. Step 4: Simplify right side
    8,356.13x = 57,664,431.42
  5. Step 5: Solve for x
    x = 57,664,431.42/8,356.13
  6. Step 6: Final answer
    x = 6,900.85

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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.