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Finding the Fourth Proportional to 1,821.53, 2,733.32 and 725.99

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Solution

The fourth proportional to 1,821.53, 2,733.32 and 725.99 is: 1,089.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.53 : 2,733.32 = 725.99 : x
  2. Step 2: Convert to fraction form
    1,821.53/2,733.32 = 725.99/x
  3. Step 3: Cross multiply
    1,821.53x = 2,733.32 × 725.99
  4. Step 4: Simplify right side
    1,821.53x = 1,984,351.14
  5. Step 5: Solve for x
    x = 1,984,351.14/1,821.53
  6. Step 6: Final answer
    x = 1,089.39

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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.