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Finding the Fourth Proportional to 8,966.93, 12,369.30 and 5,380.97

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Solution

The fourth proportional to 8,966.93, 12,369.30 and 5,380.97 is: 7,422.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,966.93 : 12,369.30 = 5,380.97 : x
  2. Step 2: Convert to fraction form
    8,966.93/12,369.30 = 5,380.97/x
  3. Step 3: Cross multiply
    8,966.93x = 12,369.30 × 5,380.97
  4. Step 4: Simplify right side
    8,966.93x = 66,558,770.37
  5. Step 5: Solve for x
    x = 66,558,770.37/8,966.93
  6. Step 6: Final answer
    x = 7,422.70

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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.