Home / 3,131.44-4,321.68-1,734.64

Finding the Fourth Proportional to 3,131.44, 4,321.68 and 1,734.64

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Solution

The fourth proportional to 3,131.44, 4,321.68 and 1,734.64 is: 2,393.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.44 : 4,321.68 = 1,734.64 : x
  2. Step 2: Convert to fraction form
    3,131.44/4,321.68 = 1,734.64/x
  3. Step 3: Cross multiply
    3,131.44x = 4,321.68 × 1,734.64
  4. Step 4: Simplify right side
    3,131.44x = 7,496,559.00
  5. Step 5: Solve for x
    x = 7,496,559.00/3,131.44
  6. Step 6: Final answer
    x = 2,393.97

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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.