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Finding the Fourth Proportional to 8,791.21, 12,102.10 and 6,798

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Solution

The fourth proportional to 8,791.21, 12,102.10 and 6,798 is: 9,358.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.21 : 12,102.10 = 6,798 : x
  2. Step 2: Convert to fraction form
    8,791.21/12,102.10 = 6,798/x
  3. Step 3: Cross multiply
    8,791.21x = 12,102.10 × 6,798
  4. Step 4: Simplify right side
    8,791.21x = 82,270,075.80
  5. Step 5: Solve for x
    x = 82,270,075.80/8,791.21
  6. Step 6: Final answer
    x = 9,358.22

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Why These Related Problems?

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