Home / 3,286.58-4,931.21-1,972.85

Finding the Fourth Proportional to 3,286.58, 4,931.21 and 1,972.85

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Solution

The fourth proportional to 3,286.58, 4,931.21 and 1,972.85 is: 2,960.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,286.58 : 4,931.21 = 1,972.85 : x
  2. Step 2: Convert to fraction form
    3,286.58/4,931.21 = 1,972.85/x
  3. Step 3: Cross multiply
    3,286.58x = 4,931.21 × 1,972.85
  4. Step 4: Simplify right side
    3,286.58x = 9,728,517.92
  5. Step 5: Solve for x
    x = 9,728,517.92/3,286.58
  6. Step 6: Final answer
    x = 2,960.08

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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.