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Finding the Fourth Proportional to 8,786.84, 12,125.82 and 4,807.96

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Solution

The fourth proportional to 8,786.84, 12,125.82 and 4,807.96 is: 6,634.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.84 : 12,125.82 = 4,807.96 : x
  2. Step 2: Convert to fraction form
    8,786.84/12,125.82 = 4,807.96/x
  3. Step 3: Cross multiply
    8,786.84x = 12,125.82 × 4,807.96
  4. Step 4: Simplify right side
    8,786.84x = 58,300,486.41
  5. Step 5: Solve for x
    x = 58,300,486.41/8,786.84
  6. Step 6: Final answer
    x = 6,634.98

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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.