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Finding the Fourth Proportional to 8,624.85, 11,905.26 and 5,087.85

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Solution

The fourth proportional to 8,624.85, 11,905.26 and 5,087.85 is: 7,022.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,624.85 : 11,905.26 = 5,087.85 : x
  2. Step 2: Convert to fraction form
    8,624.85/11,905.26 = 5,087.85/x
  3. Step 3: Cross multiply
    8,624.85x = 11,905.26 × 5,087.85
  4. Step 4: Simplify right side
    8,624.85x = 60,572,177.09
  5. Step 5: Solve for x
    x = 60,572,177.09/8,624.85
  6. Step 6: Final answer
    x = 7,022.98

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