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Finding the Fourth Proportional to 6,238.53, 8,609.12 and 3,405.86

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Solution

The fourth proportional to 6,238.53, 8,609.12 and 3,405.86 is: 4,700.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,238.53 : 8,609.12 = 3,405.86 : x
  2. Step 2: Convert to fraction form
    6,238.53/8,609.12 = 3,405.86/x
  3. Step 3: Cross multiply
    6,238.53x = 8,609.12 × 3,405.86
  4. Step 4: Simplify right side
    6,238.53x = 29,321,457.44
  5. Step 5: Solve for x
    x = 29,321,457.44/6,238.53
  6. Step 6: Final answer
    x = 4,700.06

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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.