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Finding the Fourth Proportional to 3,679.83, 5,520.24 and 1,339.53

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Solution

The fourth proportional to 3,679.83, 5,520.24 and 1,339.53 is: 2,009.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,679.83 : 5,520.24 = 1,339.53 : x
  2. Step 2: Convert to fraction form
    3,679.83/5,520.24 = 1,339.53/x
  3. Step 3: Cross multiply
    3,679.83x = 5,520.24 × 1,339.53
  4. Step 4: Simplify right side
    3,679.83x = 7,394,527.09
  5. Step 5: Solve for x
    x = 7,394,527.09/3,679.83
  6. Step 6: Final answer
    x = 2,009.48

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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.