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Finding the Fourth Proportional to 3,830.72, 5,739.36 and 1,879.04

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Solution

The fourth proportional to 3,830.72, 5,739.36 and 1,879.04 is: 2,815.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,830.72 : 5,739.36 = 1,879.04 : x
  2. Step 2: Convert to fraction form
    3,830.72/5,739.36 = 1,879.04/x
  3. Step 3: Cross multiply
    3,830.72x = 5,739.36 × 1,879.04
  4. Step 4: Simplify right side
    3,830.72x = 10,784,487.01
  5. Step 5: Solve for x
    x = 10,784,487.01/3,830.72
  6. Step 6: Final answer
    x = 2,815.26

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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.