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Finding the Fourth Proportional to 11,661.12, 17,485.44 and 3,867.12

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Solution

The fourth proportional to 11,661.12, 17,485.44 and 3,867.12 is: 5,798.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,661.12 : 17,485.44 = 3,867.12 : x
  2. Step 2: Convert to fraction form
    11,661.12/17,485.44 = 3,867.12/x
  3. Step 3: Cross multiply
    11,661.12x = 17,485.44 × 3,867.12
  4. Step 4: Simplify right side
    11,661.12x = 67,618,294.73
  5. Step 5: Solve for x
    x = 67,618,294.73/11,661.12
  6. Step 6: Final answer
    x = 5,798.61

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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.