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Finding the Fourth Proportional to 8,786.77, 12,125.73 and 4,807.89

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Solution

The fourth proportional to 8,786.77, 12,125.73 and 4,807.89 is: 6,634.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,786.77 : 12,125.73 = 4,807.89 : x
  2. Step 2: Convert to fraction form
    8,786.77/12,125.73 = 4,807.89/x
  3. Step 3: Cross multiply
    8,786.77x = 12,125.73 × 4,807.89
  4. Step 4: Simplify right side
    8,786.77x = 58,299,176.01
  5. Step 5: Solve for x
    x = 58,299,176.01/8,786.77
  6. Step 6: Final answer
    x = 6,634.88

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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.