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Finding the Fourth Proportional to 8,791.47, 12,126.63 and 6,137.91

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Solution

The fourth proportional to 8,791.47, 12,126.63 and 6,137.91 is: 8,466.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.47 : 12,126.63 = 6,137.91 : x
  2. Step 2: Convert to fraction form
    8,791.47/12,126.63 = 6,137.91/x
  3. Step 3: Cross multiply
    8,791.47x = 12,126.63 × 6,137.91
  4. Step 4: Simplify right side
    8,791.47x = 74,432,163.54
  5. Step 5: Solve for x
    x = 74,432,163.54/8,791.47
  6. Step 6: Final answer
    x = 8,466.41

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1.5x scale

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.