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Finding the Fourth Proportional to 8,631, 12,954.60 and 3,953.52

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Solution

The fourth proportional to 8,631, 12,954.60 and 3,953.52 is: 5,933.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631 : 12,954.60 = 3,953.52 : x
  2. Step 2: Convert to fraction form
    8,631/12,954.60 = 3,953.52/x
  3. Step 3: Cross multiply
    8,631x = 12,954.60 × 3,953.52
  4. Step 4: Simplify right side
    8,631x = 51,216,270.19
  5. Step 5: Solve for x
    x = 51,216,270.19/8,631
  6. Step 6: Final answer
    x = 5,933.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.