Home / 1,919.66-2,648.97-1,255.46

Finding the Fourth Proportional to 1,919.66, 2,648.97 and 1,255.46

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Solution

The fourth proportional to 1,919.66, 2,648.97 and 1,255.46 is: 1,732.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.66 : 2,648.97 = 1,255.46 : x
  2. Step 2: Convert to fraction form
    1,919.66/2,648.97 = 1,255.46/x
  3. Step 3: Cross multiply
    1,919.66x = 2,648.97 × 1,255.46
  4. Step 4: Simplify right side
    1,919.66x = 3,325,662.63
  5. Step 5: Solve for x
    x = 3,325,662.63/1,919.66
  6. Step 6: Final answer
    x = 1,732.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.