Home / 3,781.52-5,220.96-3,520.16

Finding the Fourth Proportional to 3,781.52, 5,220.96 and 3,520.16

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Solution

The fourth proportional to 3,781.52, 5,220.96 and 3,520.16 is: 4,860.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,781.52 : 5,220.96 = 3,520.16 : x
  2. Step 2: Convert to fraction form
    3,781.52/5,220.96 = 3,520.16/x
  3. Step 3: Cross multiply
    3,781.52x = 5,220.96 × 3,520.16
  4. Step 4: Simplify right side
    3,781.52x = 18,378,614.55
  5. Step 5: Solve for x
    x = 18,378,614.55/3,781.52
  6. Step 6: Final answer
    x = 4,860.11

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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.