Home / 8,956.97-12,359.64-5,179.57

Finding the Fourth Proportional to 8,956.97, 12,359.64 and 5,179.57

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Solution

The fourth proportional to 8,956.97, 12,359.64 and 5,179.57 is: 7,147.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,956.97 : 12,359.64 = 5,179.57 : x
  2. Step 2: Convert to fraction form
    8,956.97/12,359.64 = 5,179.57/x
  3. Step 3: Cross multiply
    8,956.97x = 12,359.64 × 5,179.57
  4. Step 4: Simplify right side
    8,956.97x = 64,017,589.66
  5. Step 5: Solve for x
    x = 64,017,589.66/8,956.97
  6. Step 6: Final answer
    x = 7,147.24

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Half scale
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Double scale
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Similar ratio
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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.