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Finding the Fourth Proportional to 8,768.77, 12,101.12 and 4,789.92

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Solution

The fourth proportional to 8,768.77, 12,101.12 and 4,789.92 is: 6,610.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,768.77 : 12,101.12 = 4,789.92 : x
  2. Step 2: Convert to fraction form
    8,768.77/12,101.12 = 4,789.92/x
  3. Step 3: Cross multiply
    8,768.77x = 12,101.12 × 4,789.92
  4. Step 4: Simplify right side
    8,768.77x = 57,963,396.71
  5. Step 5: Solve for x
    x = 57,963,396.71/8,768.77
  6. Step 6: Final answer
    x = 6,610.21

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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.