Home / 2,221.14-3,330.74-905.18

Finding the Fourth Proportional to 2,221.14, 3,330.74 and 905.18

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Solution

The fourth proportional to 2,221.14, 3,330.74 and 905.18 is: 1,357.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.14 : 3,330.74 = 905.18 : x
  2. Step 2: Convert to fraction form
    2,221.14/3,330.74 = 905.18/x
  3. Step 3: Cross multiply
    2,221.14x = 3,330.74 × 905.18
  4. Step 4: Simplify right side
    2,221.14x = 3,014,898.05
  5. Step 5: Solve for x
    x = 3,014,898.05/2,221.14
  6. Step 6: Final answer
    x = 1,357.37

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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.