Home / 8,126.82-12,173.22-5,190.18

Finding the Fourth Proportional to 8,126.82, 12,173.22 and 5,190.18

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Solution

The fourth proportional to 8,126.82, 12,173.22 and 5,190.18 is: 7,774.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.82 : 12,173.22 = 5,190.18 : x
  2. Step 2: Convert to fraction form
    8,126.82/12,173.22 = 5,190.18/x
  3. Step 3: Cross multiply
    8,126.82x = 12,173.22 × 5,190.18
  4. Step 4: Simplify right side
    8,126.82x = 63,181,202.98
  5. Step 5: Solve for x
    x = 63,181,202.98/8,126.82
  6. Step 6: Final answer
    x = 7,774.41

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Half scale
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Double scale
Find fourth proportional to 8,127.82, 12,174.72 and 5,191.18
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.