Home / 2,220.73-3,330.77-905.05

Finding the Fourth Proportional to 2,220.73, 3,330.77 and 905.05

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Solution

The fourth proportional to 2,220.73, 3,330.77 and 905.05 is: 1,357.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.73 : 3,330.77 = 905.05 : x
  2. Step 2: Convert to fraction form
    2,220.73/3,330.77 = 905.05/x
  3. Step 3: Cross multiply
    2,220.73x = 3,330.77 × 905.05
  4. Step 4: Simplify right side
    2,220.73x = 3,014,513.39
  5. Step 5: Solve for x
    x = 3,014,513.39/2,220.73
  6. Step 6: Final answer
    x = 1,357.44

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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.