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Finding the Fourth Proportional to 7,661.67, 11,486.65 and 3,961.53

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Solution

The fourth proportional to 7,661.67, 11,486.65 and 3,961.53 is: 5,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,661.67 : 11,486.65 = 3,961.53 : x
  2. Step 2: Convert to fraction form
    7,661.67/11,486.65 = 3,961.53/x
  3. Step 3: Cross multiply
    7,661.67x = 11,486.65 × 3,961.53
  4. Step 4: Simplify right side
    7,661.67x = 45,504,688.77
  5. Step 5: Solve for x
    x = 45,504,688.77/7,661.67
  6. Step 6: Final answer
    x = 5,939.27

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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.