Home / 2,214.04-3,321.90-1,391.40

Finding the Fourth Proportional to 2,214.04, 3,321.90 and 1,391.40

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Solution

The fourth proportional to 2,214.04, 3,321.90 and 1,391.40 is: 2,087.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,214.04 : 3,321.90 = 1,391.40 : x
  2. Step 2: Convert to fraction form
    2,214.04/3,321.90 = 1,391.40/x
  3. Step 3: Cross multiply
    2,214.04x = 3,321.90 × 1,391.40
  4. Step 4: Simplify right side
    2,214.04x = 4,622,091.66
  5. Step 5: Solve for x
    x = 4,622,091.66/2,214.04
  6. Step 6: Final answer
    x = 2,087.63

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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.