Home / 2,107.39-2,907.62-1,361.38

Finding the Fourth Proportional to 2,107.39, 2,907.62 and 1,361.38

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Solution

The fourth proportional to 2,107.39, 2,907.62 and 1,361.38 is: 1,878.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.39 : 2,907.62 = 1,361.38 : x
  2. Step 2: Convert to fraction form
    2,107.39/2,907.62 = 1,361.38/x
  3. Step 3: Cross multiply
    2,107.39x = 2,907.62 × 1,361.38
  4. Step 4: Simplify right side
    2,107.39x = 3,958,368.91
  5. Step 5: Solve for x
    x = 3,958,368.91/2,107.39
  6. Step 6: Final answer
    x = 1,878.33

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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.