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Finding the Fourth Proportional to 6,961.67, 9,607.34 and 3,817.86

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Solution

The fourth proportional to 6,961.67, 9,607.34 and 3,817.86 is: 5,268.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,961.67 : 9,607.34 = 3,817.86 : x
  2. Step 2: Convert to fraction form
    6,961.67/9,607.34 = 3,817.86/x
  3. Step 3: Cross multiply
    6,961.67x = 9,607.34 × 3,817.86
  4. Step 4: Simplify right side
    6,961.67x = 36,679,479.09
  5. Step 5: Solve for x
    x = 36,679,479.09/6,961.67
  6. Step 6: Final answer
    x = 5,268.78

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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.