Home / 8,128.56-11,218.38-4,772.64

Finding the Fourth Proportional to 8,128.56, 11,218.38 and 4,772.64

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Solution

The fourth proportional to 8,128.56, 11,218.38 and 4,772.64 is: 6,586.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,128.56 : 11,218.38 = 4,772.64 : x
  2. Step 2: Convert to fraction form
    8,128.56/11,218.38 = 4,772.64/x
  3. Step 3: Cross multiply
    8,128.56x = 11,218.38 × 4,772.64
  4. Step 4: Simplify right side
    8,128.56x = 53,541,289.12
  5. Step 5: Solve for x
    x = 53,541,289.12/8,128.56
  6. Step 6: Final answer
    x = 6,586.81

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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.