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Finding the Fourth Proportional to 8,515.31, 11,751.01 and 4,789.31

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Solution

The fourth proportional to 8,515.31, 11,751.01 and 4,789.31 is: 6,609.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,515.31 : 11,751.01 = 4,789.31 : x
  2. Step 2: Convert to fraction form
    8,515.31/11,751.01 = 4,789.31/x
  3. Step 3: Cross multiply
    8,515.31x = 11,751.01 × 4,789.31
  4. Step 4: Simplify right side
    8,515.31x = 56,279,229.70
  5. Step 5: Solve for x
    x = 56,279,229.70/8,515.31
  6. Step 6: Final answer
    x = 6,609.18

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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.