Home / 2,154.28-3,226.54-2,105.68

Finding the Fourth Proportional to 2,154.28, 3,226.54 and 2,105.68

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Solution

The fourth proportional to 2,154.28, 3,226.54 and 2,105.68 is: 3,153.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.28 : 3,226.54 = 2,105.68 : x
  2. Step 2: Convert to fraction form
    2,154.28/3,226.54 = 2,105.68/x
  3. Step 3: Cross multiply
    2,154.28x = 3,226.54 × 2,105.68
  4. Step 4: Simplify right side
    2,154.28x = 6,794,060.75
  5. Step 5: Solve for x
    x = 6,794,060.75/2,154.28
  6. Step 6: Final answer
    x = 3,153.75

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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.