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Finding the Fourth Proportional to 8,791.02, 12,131.59 and 4,812.10

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Solution

The fourth proportional to 8,791.02, 12,131.59 and 4,812.10 is: 6,640.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.02 : 12,131.59 = 4,812.10 : x
  2. Step 2: Convert to fraction form
    8,791.02/12,131.59 = 4,812.10/x
  3. Step 3: Cross multiply
    8,791.02x = 12,131.59 × 4,812.10
  4. Step 4: Simplify right side
    8,791.02x = 58,378,424.24
  5. Step 5: Solve for x
    x = 58,378,424.24/8,791.02
  6. Step 6: Final answer
    x = 6,640.69

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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.