Home / 5,028.78-6,939.88-2,790.48

Finding the Fourth Proportional to 5,028.78, 6,939.88 and 2,790.48

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Solution

The fourth proportional to 5,028.78, 6,939.88 and 2,790.48 is: 3,850.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,028.78 : 6,939.88 = 2,790.48 : x
  2. Step 2: Convert to fraction form
    5,028.78/6,939.88 = 2,790.48/x
  3. Step 3: Cross multiply
    5,028.78x = 6,939.88 × 2,790.48
  4. Step 4: Simplify right side
    5,028.78x = 19,365,596.34
  5. Step 5: Solve for x
    x = 19,365,596.34/5,028.78
  6. Step 6: Final answer
    x = 3,850.95

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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.