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Finding the Fourth Proportional to 8,636.83, 12,954.79 and 4,936.70

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Solution

The fourth proportional to 8,636.83, 12,954.79 and 4,936.70 is: 7,404.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.83 : 12,954.79 = 4,936.70 : x
  2. Step 2: Convert to fraction form
    8,636.83/12,954.79 = 4,936.70/x
  3. Step 3: Cross multiply
    8,636.83x = 12,954.79 × 4,936.70
  4. Step 4: Simplify right side
    8,636.83x = 63,953,849.71
  5. Step 5: Solve for x
    x = 63,953,849.71/8,636.83
  6. Step 6: Final answer
    x = 7,404.78

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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.