Home / 11,975.85-17,961.75-3,653.91

Finding the Fourth Proportional to 11,975.85, 17,961.75 and 3,653.91

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Solution

The fourth proportional to 11,975.85, 17,961.75 and 3,653.91 is: 5,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,975.85 : 17,961.75 = 3,653.91 : x
  2. Step 2: Convert to fraction form
    11,975.85/17,961.75 = 3,653.91/x
  3. Step 3: Cross multiply
    11,975.85x = 17,961.75 × 3,653.91
  4. Step 4: Simplify right side
    11,975.85x = 65,630,617.94
  5. Step 5: Solve for x
    x = 65,630,617.94/11,975.85
  6. Step 6: Final answer
    x = 5,480.25

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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.