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Finding the Fourth Proportional to 8,912.96, 13,393.67 and 4,755.91

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Solution

The fourth proportional to 8,912.96, 13,393.67 and 4,755.91 is: 7,146.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.96 : 13,393.67 = 4,755.91 : x
  2. Step 2: Convert to fraction form
    8,912.96/13,393.67 = 4,755.91/x
  3. Step 3: Cross multiply
    8,912.96x = 13,393.67 × 4,755.91
  4. Step 4: Simplify right side
    8,912.96x = 63,699,034.01
  5. Step 5: Solve for x
    x = 63,699,034.01/8,912.96
  6. Step 6: Final answer
    x = 7,146.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.