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Finding the Fourth Proportional to 8,116.80, 11,201.22 and 4,390.80

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Solution

The fourth proportional to 8,116.80, 11,201.22 and 4,390.80 is: 6,059.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,116.80 : 11,201.22 = 4,390.80 : x
  2. Step 2: Convert to fraction form
    8,116.80/11,201.22 = 4,390.80/x
  3. Step 3: Cross multiply
    8,116.80x = 11,201.22 × 4,390.80
  4. Step 4: Simplify right side
    8,116.80x = 49,182,316.78
  5. Step 5: Solve for x
    x = 49,182,316.78/8,116.80
  6. Step 6: Final answer
    x = 6,059.32

Related Problems

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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.