Home / 2,907.82-4,013.67-1,976.86

Finding the Fourth Proportional to 2,907.82, 4,013.67 and 1,976.86

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Solution

The fourth proportional to 2,907.82, 4,013.67 and 1,976.86 is: 2,728.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.82 : 4,013.67 = 1,976.86 : x
  2. Step 2: Convert to fraction form
    2,907.82/4,013.67 = 1,976.86/x
  3. Step 3: Cross multiply
    2,907.82x = 4,013.67 × 1,976.86
  4. Step 4: Simplify right side
    2,907.82x = 7,934,463.68
  5. Step 5: Solve for x
    x = 7,934,463.68/2,907.82
  6. Step 6: Final answer
    x = 2,728.66

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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.