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Finding the Fourth Proportional to 8,636.49, 12,958.38 and 4,253.99

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Solution

The fourth proportional to 8,636.49, 12,958.38 and 4,253.99 is: 6,382.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.49 : 12,958.38 = 4,253.99 : x
  2. Step 2: Convert to fraction form
    8,636.49/12,958.38 = 4,253.99/x
  3. Step 3: Cross multiply
    8,636.49x = 12,958.38 × 4,253.99
  4. Step 4: Simplify right side
    8,636.49x = 55,124,754.14
  5. Step 5: Solve for x
    x = 55,124,754.14/8,636.49
  6. Step 6: Final answer
    x = 6,382.77

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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.