Home / 3,171.60-4,372.92-2,771.64

Finding the Fourth Proportional to 3,171.60, 4,372.92 and 2,771.64

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Solution

The fourth proportional to 3,171.60, 4,372.92 and 2,771.64 is: 3,821.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.60 : 4,372.92 = 2,771.64 : x
  2. Step 2: Convert to fraction form
    3,171.60/4,372.92 = 2,771.64/x
  3. Step 3: Cross multiply
    3,171.60x = 4,372.92 × 2,771.64
  4. Step 4: Simplify right side
    3,171.60x = 12,120,159.99
  5. Step 5: Solve for x
    x = 12,120,159.99/3,171.60
  6. Step 6: Final answer
    x = 3,821.47

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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.