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Finding the Fourth Proportional to 1,907.84, 2,633.14 and 1,121.88

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Solution

The fourth proportional to 1,907.84, 2,633.14 and 1,121.88 is: 1,548.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,907.84 : 2,633.14 = 1,121.88 : x
  2. Step 2: Convert to fraction form
    1,907.84/2,633.14 = 1,121.88/x
  3. Step 3: Cross multiply
    1,907.84x = 2,633.14 × 1,121.88
  4. Step 4: Simplify right side
    1,907.84x = 2,954,067.10
  5. Step 5: Solve for x
    x = 2,954,067.10/1,907.84
  6. Step 6: Final answer
    x = 1,548.38

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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.