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Finding the Fourth Proportional to 5,028.67, 6,939.67 and 2,790.46

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Solution

The fourth proportional to 5,028.67, 6,939.67 and 2,790.46 is: 3,850.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,028.67 : 6,939.67 = 2,790.46 : x
  2. Step 2: Convert to fraction form
    5,028.67/6,939.67 = 2,790.46/x
  3. Step 3: Cross multiply
    5,028.67x = 6,939.67 × 2,790.46
  4. Step 4: Simplify right side
    5,028.67x = 19,364,871.55
  5. Step 5: Solve for x
    x = 19,364,871.55/5,028.67
  6. Step 6: Final answer
    x = 3,850.90

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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.