Home / 2,150.55-3,226.28-690.73

Finding the Fourth Proportional to 2,150.55, 3,226.28 and 690.73

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Solution

The fourth proportional to 2,150.55, 3,226.28 and 690.73 is: 1,036.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,150.55 : 3,226.28 = 690.73 : x
  2. Step 2: Convert to fraction form
    2,150.55/3,226.28 = 690.73/x
  3. Step 3: Cross multiply
    2,150.55x = 3,226.28 × 690.73
  4. Step 4: Simplify right side
    2,150.55x = 2,228,472.25
  5. Step 5: Solve for x
    x = 2,228,472.25/2,150.55
  6. Step 6: Final answer
    x = 1,036.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.