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Finding the Fourth Proportional to 6,238.42, 8,609.60 and 3,720.63

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Solution

The fourth proportional to 6,238.42, 8,609.60 and 3,720.63 is: 5,134.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,238.42 : 8,609.60 = 3,720.63 : x
  2. Step 2: Convert to fraction form
    6,238.42/8,609.60 = 3,720.63/x
  3. Step 3: Cross multiply
    6,238.42x = 8,609.60 × 3,720.63
  4. Step 4: Simplify right side
    6,238.42x = 32,033,182.87
  5. Step 5: Solve for x
    x = 32,033,182.87/6,238.42
  6. Step 6: Final answer
    x = 5,134.83

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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.