Home / 6,815.41-10,208.77-3,120.75

Finding the Fourth Proportional to 6,815.41, 10,208.77 and 3,120.75

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Solution

The fourth proportional to 6,815.41, 10,208.77 and 3,120.75 is: 4,674.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,815.41 : 10,208.77 = 3,120.75 : x
  2. Step 2: Convert to fraction form
    6,815.41/10,208.77 = 3,120.75/x
  3. Step 3: Cross multiply
    6,815.41x = 10,208.77 × 3,120.75
  4. Step 4: Simplify right side
    6,815.41x = 31,859,018.98
  5. Step 5: Solve for x
    x = 31,859,018.98/6,815.41
  6. Step 6: Final answer
    x = 4,674.56

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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.