Home / 2,321.21-3,202.20-1,690.73

Finding the Fourth Proportional to 2,321.21, 3,202.20 and 1,690.73

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Solution

The fourth proportional to 2,321.21, 3,202.20 and 1,690.73 is: 2,332.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,321.21 : 3,202.20 = 1,690.73 : x
  2. Step 2: Convert to fraction form
    2,321.21/3,202.20 = 1,690.73/x
  3. Step 3: Cross multiply
    2,321.21x = 3,202.20 × 1,690.73
  4. Step 4: Simplify right side
    2,321.21x = 5,414,047.15
  5. Step 5: Solve for x
    x = 5,414,047.15/2,321.21
  6. Step 6: Final answer
    x = 2,332.42

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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.