Home / 3,185.62-4,385.77-2,512.21

Finding the Fourth Proportional to 3,185.62, 4,385.77 and 2,512.21

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Solution

The fourth proportional to 3,185.62, 4,385.77 and 2,512.21 is: 3,458.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,185.62 : 4,385.77 = 2,512.21 : x
  2. Step 2: Convert to fraction form
    3,185.62/4,385.77 = 2,512.21/x
  3. Step 3: Cross multiply
    3,185.62x = 4,385.77 × 2,512.21
  4. Step 4: Simplify right side
    3,185.62x = 11,017,975.25
  5. Step 5: Solve for x
    x = 11,017,975.25/3,185.62
  6. Step 6: Final answer
    x = 3,458.66

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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.