Home / 2,761.85-3,811.35-1,519.85

Finding the Fourth Proportional to 2,761.85, 3,811.35 and 1,519.85

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Solution

The fourth proportional to 2,761.85, 3,811.35 and 1,519.85 is: 2,097.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,761.85 : 3,811.35 = 1,519.85 : x
  2. Step 2: Convert to fraction form
    2,761.85/3,811.35 = 1,519.85/x
  3. Step 3: Cross multiply
    2,761.85x = 3,811.35 × 1,519.85
  4. Step 4: Simplify right side
    2,761.85x = 5,792,653.64
  5. Step 5: Solve for x
    x = 5,792,653.64/2,761.85
  6. Step 6: Final answer
    x = 2,097.39

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1.5x scale

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.