Home / 2,356.21-3,251.69-1,361.80

Finding the Fourth Proportional to 2,356.21, 3,251.69 and 1,361.80

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Solution

The fourth proportional to 2,356.21, 3,251.69 and 1,361.80 is: 1,879.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,356.21 : 3,251.69 = 1,361.80 : x
  2. Step 2: Convert to fraction form
    2,356.21/3,251.69 = 1,361.80/x
  3. Step 3: Cross multiply
    2,356.21x = 3,251.69 × 1,361.80
  4. Step 4: Simplify right side
    2,356.21x = 4,428,151.44
  5. Step 5: Solve for x
    x = 4,428,151.44/2,356.21
  6. Step 6: Final answer
    x = 1,879.35

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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.