Home / 1,881.30-2,821.00-1,101.55

Finding the Fourth Proportional to 1,881.30, 2,821.00 and 1,101.55

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Solution

The fourth proportional to 1,881.30, 2,821.00 and 1,101.55 is: 1,651.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,881.30 : 2,821.00 = 1,101.55 : x
  2. Step 2: Convert to fraction form
    1,881.30/2,821.00 = 1,101.55/x
  3. Step 3: Cross multiply
    1,881.30x = 2,821.00 × 1,101.55
  4. Step 4: Simplify right side
    1,881.30x = 3,107,452.94
  5. Step 5: Solve for x
    x = 3,107,452.94/1,881.30
  6. Step 6: Final answer
    x = 1,651.76

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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.