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Finding the Fourth Proportional to 1,744.49, 2,621.60 and 879.41

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Solution

The fourth proportional to 1,744.49, 2,621.60 and 879.41 is: 1,321.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,744.49 : 2,621.60 = 879.41 : x
  2. Step 2: Convert to fraction form
    1,744.49/2,621.60 = 879.41/x
  3. Step 3: Cross multiply
    1,744.49x = 2,621.60 × 879.41
  4. Step 4: Simplify right side
    1,744.49x = 2,305,461.26
  5. Step 5: Solve for x
    x = 2,305,461.26/1,744.49
  6. Step 6: Final answer
    x = 1,321.57

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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.