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Finding the Fourth Proportional to 4,608.42, 6,912.81 and 3,919.86

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Solution

The fourth proportional to 4,608.42, 6,912.81 and 3,919.86 is: 5,879.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,608.42 : 6,912.81 = 3,919.86 : x
  2. Step 2: Convert to fraction form
    4,608.42/6,912.81 = 3,919.86/x
  3. Step 3: Cross multiply
    4,608.42x = 6,912.81 × 3,919.86
  4. Step 4: Simplify right side
    4,608.42x = 27,097,247.41
  5. Step 5: Solve for x
    x = 27,097,247.41/4,608.42
  6. Step 6: Final answer
    x = 5,879.94

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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.