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Finding the Fourth Proportional to 8,855.42, 12,220.56 and 4,876.65

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Solution

The fourth proportional to 8,855.42, 12,220.56 and 4,876.65 is: 6,729.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.42 : 12,220.56 = 4,876.65 : x
  2. Step 2: Convert to fraction form
    8,855.42/12,220.56 = 4,876.65/x
  3. Step 3: Cross multiply
    8,855.42x = 12,220.56 × 4,876.65
  4. Step 4: Simplify right side
    8,855.42x = 59,595,393.92
  5. Step 5: Solve for x
    x = 59,595,393.92/8,855.42
  6. Step 6: Final answer
    x = 6,729.83

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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.