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Finding the Fourth Proportional to 11,877.84, 17,818.80 and 4,084.80

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Solution

The fourth proportional to 11,877.84, 17,818.80 and 4,084.80 is: 6,127.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,877.84 : 17,818.80 = 4,084.80 : x
  2. Step 2: Convert to fraction form
    11,877.84/17,818.80 = 4,084.80/x
  3. Step 3: Cross multiply
    11,877.84x = 17,818.80 × 4,084.80
  4. Step 4: Simplify right side
    11,877.84x = 72,786,234.24
  5. Step 5: Solve for x
    x = 72,786,234.24/11,877.84
  6. Step 6: Final answer
    x = 6,127.90

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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.