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Finding the Fourth Proportional to 8,658, 11,949.21 and 4,881.94

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Solution

The fourth proportional to 8,658, 11,949.21 and 4,881.94 is: 6,737.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658 : 11,949.21 = 4,881.94 : x
  2. Step 2: Convert to fraction form
    8,658/11,949.21 = 4,881.94/x
  3. Step 3: Cross multiply
    8,658x = 11,949.21 × 4,881.94
  4. Step 4: Simplify right side
    8,658x = 58,335,296.39
  5. Step 5: Solve for x
    x = 58,335,296.39/8,658
  6. Step 6: Final answer
    x = 6,737.73

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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.