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Finding the Fourth Proportional to 8,906.64, 12,296.74 and 5,721.22

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Solution

The fourth proportional to 8,906.64, 12,296.74 and 5,721.22 is: 7,898.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.64 : 12,296.74 = 5,721.22 : x
  2. Step 2: Convert to fraction form
    8,906.64/12,296.74 = 5,721.22/x
  3. Step 3: Cross multiply
    8,906.64x = 12,296.74 × 5,721.22
  4. Step 4: Simplify right side
    8,906.64x = 70,352,354.82
  5. Step 5: Solve for x
    x = 70,352,354.82/8,906.64
  6. Step 6: Final answer
    x = 7,898.87

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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.