Home / 2,245.11-3,098.50-1,361.40

Finding the Fourth Proportional to 2,245.11, 3,098.50 and 1,361.40

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Solution

The fourth proportional to 2,245.11, 3,098.50 and 1,361.40 is: 1,878.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,245.11 : 3,098.50 = 1,361.40 : x
  2. Step 2: Convert to fraction form
    2,245.11/3,098.50 = 1,361.40/x
  3. Step 3: Cross multiply
    2,245.11x = 3,098.50 × 1,361.40
  4. Step 4: Simplify right side
    2,245.11x = 4,218,297.90
  5. Step 5: Solve for x
    x = 4,218,297.90/2,245.11
  6. Step 6: Final answer
    x = 1,878.88

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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.