Home / 5,128.54-7,072.67-3,361.12

Finding the Fourth Proportional to 5,128.54, 7,072.67 and 3,361.12

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Solution

The fourth proportional to 5,128.54, 7,072.67 and 3,361.12 is: 4,635.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,128.54 : 7,072.67 = 3,361.12 : x
  2. Step 2: Convert to fraction form
    5,128.54/7,072.67 = 3,361.12/x
  3. Step 3: Cross multiply
    5,128.54x = 7,072.67 × 3,361.12
  4. Step 4: Simplify right side
    5,128.54x = 23,772,083.31
  5. Step 5: Solve for x
    x = 23,772,083.31/5,128.54
  6. Step 6: Final answer
    x = 4,635.26

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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.