Home / 8,105.64-11,185.72-4,520.64

Finding the Fourth Proportional to 8,105.64, 11,185.72 and 4,520.64

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Solution

The fourth proportional to 8,105.64, 11,185.72 and 4,520.64 is: 6,238.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,105.64 : 11,185.72 = 4,520.64 : x
  2. Step 2: Convert to fraction form
    8,105.64/11,185.72 = 4,520.64/x
  3. Step 3: Cross multiply
    8,105.64x = 11,185.72 × 4,520.64
  4. Step 4: Simplify right side
    8,105.64x = 50,566,613.26
  5. Step 5: Solve for x
    x = 50,566,613.26/8,105.64
  6. Step 6: Final answer
    x = 6,238.45

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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.