Home / 5,112.80-7,661.33-3,028.65

Finding the Fourth Proportional to 5,112.80, 7,661.33 and 3,028.65

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Solution

The fourth proportional to 5,112.80, 7,661.33 and 3,028.65 is: 4,538.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,112.80 : 7,661.33 = 3,028.65 : x
  2. Step 2: Convert to fraction form
    5,112.80/7,661.33 = 3,028.65/x
  3. Step 3: Cross multiply
    5,112.80x = 7,661.33 × 3,028.65
  4. Step 4: Simplify right side
    5,112.80x = 23,203,525.49
  5. Step 5: Solve for x
    x = 23,203,525.49/5,112.80
  6. Step 6: Final answer
    x = 4,538.32

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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.