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Finding the Fourth Proportional to 8,855.84, 12,219.28 and 6,730.81

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Solution

The fourth proportional to 8,855.84, 12,219.28 and 6,730.81 is: 9,287.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.84 : 12,219.28 = 6,730.81 : x
  2. Step 2: Convert to fraction form
    8,855.84/12,219.28 = 6,730.81/x
  3. Step 3: Cross multiply
    8,855.84x = 12,219.28 × 6,730.81
  4. Step 4: Simplify right side
    8,855.84x = 82,245,604.64
  5. Step 5: Solve for x
    x = 82,245,604.64/8,855.84
  6. Step 6: Final answer
    x = 9,287.16

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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.