Home / 3,107.98-4,288.56-1,928.62

Finding the Fourth Proportional to 3,107.98, 4,288.56 and 1,928.62

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Solution

The fourth proportional to 3,107.98, 4,288.56 and 1,928.62 is: 2,661.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,107.98 : 4,288.56 = 1,928.62 : x
  2. Step 2: Convert to fraction form
    3,107.98/4,288.56 = 1,928.62/x
  3. Step 3: Cross multiply
    3,107.98x = 4,288.56 × 1,928.62
  4. Step 4: Simplify right side
    3,107.98x = 8,270,981.14
  5. Step 5: Solve for x
    x = 8,270,981.14/3,107.98
  6. Step 6: Final answer
    x = 2,661.21

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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.