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Finding the Fourth Proportional to 8,816, 12,166.10 and 5,279.72

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Solution

The fourth proportional to 8,816, 12,166.10 and 5,279.72 is: 7,286.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,816 : 12,166.10 = 5,279.72 : x
  2. Step 2: Convert to fraction form
    8,816/12,166.10 = 5,279.72/x
  3. Step 3: Cross multiply
    8,816x = 12,166.10 × 5,279.72
  4. Step 4: Simplify right side
    8,816x = 64,233,601.49
  5. Step 5: Solve for x
    x = 64,233,601.49/8,816
  6. Step 6: Final answer
    x = 7,286.03

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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.