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Finding the Fourth Proportional to 2,629.23, 3,943.83 and 874.36

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Solution

The fourth proportional to 2,629.23, 3,943.83 and 874.36 is: 1,311.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.23 : 3,943.83 = 874.36 : x
  2. Step 2: Convert to fraction form
    2,629.23/3,943.83 = 874.36/x
  3. Step 3: Cross multiply
    2,629.23x = 3,943.83 × 874.36
  4. Step 4: Simplify right side
    2,629.23x = 3,448,327.20
  5. Step 5: Solve for x
    x = 3,448,327.20/2,629.23
  6. Step 6: Final answer
    x = 1,311.54

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Similar ratio
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1.5x scale

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.