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Finding the Fourth Proportional to 1,817.41, 2,726.30 and 843.79

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Solution

The fourth proportional to 1,817.41, 2,726.30 and 843.79 is: 1,265.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,817.41 : 2,726.30 = 843.79 : x
  2. Step 2: Convert to fraction form
    1,817.41/2,726.30 = 843.79/x
  3. Step 3: Cross multiply
    1,817.41x = 2,726.30 × 843.79
  4. Step 4: Simplify right side
    1,817.41x = 2,300,424.68
  5. Step 5: Solve for x
    x = 2,300,424.68/1,817.41
  6. Step 6: Final answer
    x = 1,265.77

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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.