Home / 3,860.10-5,321.96-3,151.21

Finding the Fourth Proportional to 3,860.10, 5,321.96 and 3,151.21

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Solution

The fourth proportional to 3,860.10, 5,321.96 and 3,151.21 is: 4,344.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,860.10 : 5,321.96 = 3,151.21 : x
  2. Step 2: Convert to fraction form
    3,860.10/5,321.96 = 3,151.21/x
  3. Step 3: Cross multiply
    3,860.10x = 5,321.96 × 3,151.21
  4. Step 4: Simplify right side
    3,860.10x = 16,770,613.57
  5. Step 5: Solve for x
    x = 16,770,613.57/3,860.10
  6. Step 6: Final answer
    x = 4,344.61

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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.