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Finding the Fourth Proportional to 1,821.72, 2,728.46 and 1,493.66

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Solution

The fourth proportional to 1,821.72, 2,728.46 and 1,493.66 is: 2,237.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.72 : 2,728.46 = 1,493.66 : x
  2. Step 2: Convert to fraction form
    1,821.72/2,728.46 = 1,493.66/x
  3. Step 3: Cross multiply
    1,821.72x = 2,728.46 × 1,493.66
  4. Step 4: Simplify right side
    1,821.72x = 4,075,391.56
  5. Step 5: Solve for x
    x = 4,075,391.56/1,821.72
  6. Step 6: Final answer
    x = 2,237.11

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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.