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Finding the Fourth Proportional to 8,963.39, 12,369.77 and 4,930.38

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Solution

The fourth proportional to 8,963.39, 12,369.77 and 4,930.38 is: 6,804.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,963.39 : 12,369.77 = 4,930.38 : x
  2. Step 2: Convert to fraction form
    8,963.39/12,369.77 = 4,930.38/x
  3. Step 3: Cross multiply
    8,963.39x = 12,369.77 × 4,930.38
  4. Step 4: Simplify right side
    8,963.39x = 60,987,660.45
  5. Step 5: Solve for x
    x = 60,987,660.45/8,963.39
  6. Step 6: Final answer
    x = 6,804.09

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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.