Home / 2,792.12-4,188.71-1,331.38

Finding the Fourth Proportional to 2,792.12, 4,188.71 and 1,331.38

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Solution

The fourth proportional to 2,792.12, 4,188.71 and 1,331.38 is: 1,997.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,792.12 : 4,188.71 = 1,331.38 : x
  2. Step 2: Convert to fraction form
    2,792.12/4,188.71 = 1,331.38/x
  3. Step 3: Cross multiply
    2,792.12x = 4,188.71 × 1,331.38
  4. Step 4: Simplify right side
    2,792.12x = 5,576,758.06
  5. Step 5: Solve for x
    x = 5,576,758.06/2,792.12
  6. Step 6: Final answer
    x = 1,997.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.