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Finding the Fourth Proportional to 8,857.67, 12,223.58 and 4,878.77

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Solution

The fourth proportional to 8,857.67, 12,223.58 and 4,878.77 is: 6,732.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.67 : 12,223.58 = 4,878.77 : x
  2. Step 2: Convert to fraction form
    8,857.67/12,223.58 = 4,878.77/x
  3. Step 3: Cross multiply
    8,857.67x = 12,223.58 × 4,878.77
  4. Step 4: Simplify right side
    8,857.67x = 59,635,949.88
  5. Step 5: Solve for x
    x = 59,635,949.88/8,857.67
  6. Step 6: Final answer
    x = 6,732.69

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Double scale
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1.5x scale

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.