Home / 8,121.76-11,213.19-6,633.23

Finding the Fourth Proportional to 8,121.76, 11,213.19 and 6,633.23

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Solution

The fourth proportional to 8,121.76, 11,213.19 and 6,633.23 is: 9,158.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,121.76 : 11,213.19 = 6,633.23 : x
  2. Step 2: Convert to fraction form
    8,121.76/11,213.19 = 6,633.23/x
  3. Step 3: Cross multiply
    8,121.76x = 11,213.19 × 6,633.23
  4. Step 4: Simplify right side
    8,121.76x = 74,379,612.24
  5. Step 5: Solve for x
    x = 74,379,612.24/8,121.76
  6. Step 6: Final answer
    x = 9,158.07

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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.