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Finding the Fourth Proportional to 1,821.34, 2,733.34 and 726.02

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Solution

The fourth proportional to 1,821.34, 2,733.34 and 726.02 is: 1,089.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.34 : 2,733.34 = 726.02 : x
  2. Step 2: Convert to fraction form
    1,821.34/2,733.34 = 726.02/x
  3. Step 3: Cross multiply
    1,821.34x = 2,733.34 × 726.02
  4. Step 4: Simplify right side
    1,821.34x = 1,984,445.91
  5. Step 5: Solve for x
    x = 1,984,445.91/1,821.34
  6. Step 6: Final answer
    x = 1,089.55

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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.