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Finding the Fourth Proportional to 6,129.86, 8,451.74 and 5,183.96

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Solution

The fourth proportional to 6,129.86, 8,451.74 and 5,183.96 is: 7,147.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,129.86 : 8,451.74 = 5,183.96 : x
  2. Step 2: Convert to fraction form
    6,129.86/8,451.74 = 5,183.96/x
  3. Step 3: Cross multiply
    6,129.86x = 8,451.74 × 5,183.96
  4. Step 4: Simplify right side
    6,129.86x = 43,813,456.17
  5. Step 5: Solve for x
    x = 43,813,456.17/6,129.86
  6. Step 6: Final answer
    x = 7,147.55

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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.