Home / 4,912.42-6,778.98-2,788.12

Finding the Fourth Proportional to 4,912.42, 6,778.98 and 2,788.12

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Solution

The fourth proportional to 4,912.42, 6,778.98 and 2,788.12 is: 3,847.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,912.42 : 6,778.98 = 2,788.12 : x
  2. Step 2: Convert to fraction form
    4,912.42/6,778.98 = 2,788.12/x
  3. Step 3: Cross multiply
    4,912.42x = 6,778.98 × 2,788.12
  4. Step 4: Simplify right side
    4,912.42x = 18,900,609.72
  5. Step 5: Solve for x
    x = 18,900,609.72/4,912.42
  6. Step 6: Final answer
    x = 3,847.52

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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.