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Finding the Fourth Proportional to 5,028.38, 6,939.28 and 2,820.38

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Solution

The fourth proportional to 5,028.38, 6,939.28 and 2,820.38 is: 3,892.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,028.38 : 6,939.28 = 2,820.38 : x
  2. Step 2: Convert to fraction form
    5,028.38/6,939.28 = 2,820.38/x
  3. Step 3: Cross multiply
    5,028.38x = 6,939.28 × 2,820.38
  4. Step 4: Simplify right side
    5,028.38x = 19,571,364.78
  5. Step 5: Solve for x
    x = 19,571,364.78/5,028.38
  6. Step 6: Final answer
    x = 3,892.18

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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.