Home / 4,940.82-6,815.88-3,147.84

Finding the Fourth Proportional to 4,940.82, 6,815.88 and 3,147.84

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Solution

The fourth proportional to 4,940.82, 6,815.88 and 3,147.84 is: 4,342.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,940.82 : 6,815.88 = 3,147.84 : x
  2. Step 2: Convert to fraction form
    4,940.82/6,815.88 = 3,147.84/x
  3. Step 3: Cross multiply
    4,940.82x = 6,815.88 × 3,147.84
  4. Step 4: Simplify right side
    4,940.82x = 21,455,299.70
  5. Step 5: Solve for x
    x = 21,455,299.70/4,940.82
  6. Step 6: Final answer
    x = 4,342.46

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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.