Home / 4,879.80-7,322.70-2,107.80

Finding the Fourth Proportional to 4,879.80, 7,322.70 and 2,107.80

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Solution

The fourth proportional to 4,879.80, 7,322.70 and 2,107.80 is: 3,163.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,879.80 : 7,322.70 = 2,107.80 : x
  2. Step 2: Convert to fraction form
    4,879.80/7,322.70 = 2,107.80/x
  3. Step 3: Cross multiply
    4,879.80x = 7,322.70 × 2,107.80
  4. Step 4: Simplify right side
    4,879.80x = 15,434,787.06
  5. Step 5: Solve for x
    x = 15,434,787.06/4,879.80
  6. Step 6: Final answer
    x = 3,163.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.