Home / 8,168.76-11,277.54-5,379.12

Finding the Fourth Proportional to 8,168.76, 11,277.54 and 5,379.12

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Solution

The fourth proportional to 8,168.76, 11,277.54 and 5,379.12 is: 7,426.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,168.76 : 11,277.54 = 5,379.12 : x
  2. Step 2: Convert to fraction form
    8,168.76/11,277.54 = 5,379.12/x
  3. Step 3: Cross multiply
    8,168.76x = 11,277.54 × 5,379.12
  4. Step 4: Simplify right side
    8,168.76x = 60,663,240.96
  5. Step 5: Solve for x
    x = 60,663,240.96/8,168.76
  6. Step 6: Final answer
    x = 7,426.25

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Half scale
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Double scale
Find fourth proportional to 8,169.76, 11,278.92 and 5,380.12
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.