Home / 2,189.46-3,284.14-1,221.71

Finding the Fourth Proportional to 2,189.46, 3,284.14 and 1,221.71

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Solution

The fourth proportional to 2,189.46, 3,284.14 and 1,221.71 is: 1,832.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189.46 : 3,284.14 = 1,221.71 : x
  2. Step 2: Convert to fraction form
    2,189.46/3,284.14 = 1,221.71/x
  3. Step 3: Cross multiply
    2,189.46x = 3,284.14 × 1,221.71
  4. Step 4: Simplify right side
    2,189.46x = 4,012,266.68
  5. Step 5: Solve for x
    x = 4,012,266.68/2,189.46
  6. Step 6: Final answer
    x = 1,832.54

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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.