Home / 2,221.49-3,318.25-1,631.27

Finding the Fourth Proportional to 2,221.49, 3,318.25 and 1,631.27

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Solution

The fourth proportional to 2,221.49, 3,318.25 and 1,631.27 is: 2,436.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.49 : 3,318.25 = 1,631.27 : x
  2. Step 2: Convert to fraction form
    2,221.49/3,318.25 = 1,631.27/x
  3. Step 3: Cross multiply
    2,221.49x = 3,318.25 × 1,631.27
  4. Step 4: Simplify right side
    2,221.49x = 5,412,961.68
  5. Step 5: Solve for x
    x = 5,412,961.68/2,221.49
  6. Step 6: Final answer
    x = 2,436.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.