Home / 8,128.39-11,216.78-4,592.11

Finding the Fourth Proportional to 8,128.39, 11,216.78 and 4,592.11

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Solution

The fourth proportional to 8,128.39, 11,216.78 and 4,592.11 is: 6,336.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.39 : 11,216.78 = 4,592.11 : x
  2. Step 2: Convert to fraction form
    8,128.39/11,216.78 = 4,592.11/x
  3. Step 3: Cross multiply
    8,128.39x = 11,216.78 × 4,592.11
  4. Step 4: Simplify right side
    8,128.39x = 51,508,631.52
  5. Step 5: Solve for x
    x = 51,508,631.52/8,128.39
  6. Step 6: Final answer
    x = 6,336.88

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Half scale
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Double scale
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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.