Home / 2,221.75-3,334.14-1,439.81

Finding the Fourth Proportional to 2,221.75, 3,334.14 and 1,439.81

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Solution

The fourth proportional to 2,221.75, 3,334.14 and 1,439.81 is: 2,160.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.75 : 3,334.14 = 1,439.81 : x
  2. Step 2: Convert to fraction form
    2,221.75/3,334.14 = 1,439.81/x
  3. Step 3: Cross multiply
    2,221.75x = 3,334.14 × 1,439.81
  4. Step 4: Simplify right side
    2,221.75x = 4,800,528.11
  5. Step 5: Solve for x
    x = 4,800,528.11/2,221.75
  6. Step 6: Final answer
    x = 2,160.70

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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.