Home / 1,821.72-2,732.58-1,394.04

Finding the Fourth Proportional to 1,821.72, 2,732.58 and 1,394.04

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Solution

The fourth proportional to 1,821.72, 2,732.58 and 1,394.04 is: 2,091.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.72 : 2,732.58 = 1,394.04 : x
  2. Step 2: Convert to fraction form
    1,821.72/2,732.58 = 1,394.04/x
  3. Step 3: Cross multiply
    1,821.72x = 2,732.58 × 1,394.04
  4. Step 4: Simplify right side
    1,821.72x = 3,809,325.82
  5. Step 5: Solve for x
    x = 3,809,325.82/1,821.72
  6. Step 6: Final answer
    x = 2,091.06

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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.