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Finding the Fourth Proportional to 8,634.13, 12,927.07 and 4,671.21

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Solution

The fourth proportional to 8,634.13, 12,927.07 and 4,671.21 is: 6,993.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,634.13 : 12,927.07 = 4,671.21 : x
  2. Step 2: Convert to fraction form
    8,634.13/12,927.07 = 4,671.21/x
  3. Step 3: Cross multiply
    8,634.13x = 12,927.07 × 4,671.21
  4. Step 4: Simplify right side
    8,634.13x = 60,385,112.97
  5. Step 5: Solve for x
    x = 60,385,112.97/8,634.13
  6. Step 6: Final answer
    x = 6,993.77

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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.