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Finding the Fourth Proportional to 8,857.66, 12,223.67 and 4,878.69

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Solution

The fourth proportional to 8,857.66, 12,223.67 and 4,878.69 is: 6,732.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.66 : 12,223.67 = 4,878.69 : x
  2. Step 2: Convert to fraction form
    8,857.66/12,223.67 = 4,878.69/x
  3. Step 3: Cross multiply
    8,857.66x = 12,223.67 × 4,878.69
  4. Step 4: Simplify right side
    8,857.66x = 59,635,496.59
  5. Step 5: Solve for x
    x = 59,635,496.59/8,857.66
  6. Step 6: Final answer
    x = 6,732.65

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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.