Home / 8,179.92-11,288.34-4,643.15

Finding the Fourth Proportional to 8,179.92, 11,288.34 and 4,643.15

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Solution

The fourth proportional to 8,179.92, 11,288.34 and 4,643.15 is: 6,407.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,179.92 : 11,288.34 = 4,643.15 : x
  2. Step 2: Convert to fraction form
    8,179.92/11,288.34 = 4,643.15/x
  3. Step 3: Cross multiply
    8,179.92x = 11,288.34 × 4,643.15
  4. Step 4: Simplify right side
    8,179.92x = 52,413,399.43
  5. Step 5: Solve for x
    x = 52,413,399.43/8,179.92
  6. Step 6: Final answer
    x = 6,407.57

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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.