Home / 2,620.40-3,931.32-2,132.24

Finding the Fourth Proportional to 2,620.40, 3,931.32 and 2,132.24

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Solution

The fourth proportional to 2,620.40, 3,931.32 and 2,132.24 is: 3,198.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.40 : 3,931.32 = 2,132.24 : x
  2. Step 2: Convert to fraction form
    2,620.40/3,931.32 = 2,132.24/x
  3. Step 3: Cross multiply
    2,620.40x = 3,931.32 × 2,132.24
  4. Step 4: Simplify right side
    2,620.40x = 8,382,517.76
  5. Step 5: Solve for x
    x = 8,382,517.76/2,620.40
  6. Step 6: Final answer
    x = 3,198.95

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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.