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Finding the Fourth Proportional to 8,938, 12,336.06 and 5,163.58

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Solution

The fourth proportional to 8,938, 12,336.06 and 5,163.58 is: 7,126.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,938 : 12,336.06 = 5,163.58 : x
  2. Step 2: Convert to fraction form
    8,938/12,336.06 = 5,163.58/x
  3. Step 3: Cross multiply
    8,938x = 12,336.06 × 5,163.58
  4. Step 4: Simplify right side
    8,938x = 63,698,232.69
  5. Step 5: Solve for x
    x = 63,698,232.69/8,938
  6. Step 6: Final answer
    x = 7,126.68

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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.