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Finding the Fourth Proportional to 2,907.39, 4,007.97 and 1,910.97

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Solution

The fourth proportional to 2,907.39, 4,007.97 and 1,910.97 is: 2,634.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.39 : 4,007.97 = 1,910.97 : x
  2. Step 2: Convert to fraction form
    2,907.39/4,007.97 = 1,910.97/x
  3. Step 3: Cross multiply
    2,907.39x = 4,007.97 × 1,910.97
  4. Step 4: Simplify right side
    2,907.39x = 7,659,110.43
  5. Step 5: Solve for x
    x = 7,659,110.43/2,907.39
  6. Step 6: Final answer
    x = 2,634.36

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1.5x scale

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.