Home / 2,221.33-3,330.78-1,397.85

Finding the Fourth Proportional to 2,221.33, 3,330.78 and 1,397.85

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Solution

The fourth proportional to 2,221.33, 3,330.78 and 1,397.85 is: 2,096.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.33 : 3,330.78 = 1,397.85 : x
  2. Step 2: Convert to fraction form
    2,221.33/3,330.78 = 1,397.85/x
  3. Step 3: Cross multiply
    2,221.33x = 3,330.78 × 1,397.85
  4. Step 4: Simplify right side
    2,221.33x = 4,655,930.82
  5. Step 5: Solve for x
    x = 4,655,930.82/2,221.33
  6. Step 6: Final answer
    x = 2,096.01

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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.