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Finding the Fourth Proportional to 6,918.28, 10,361.14 and 3,397.28

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Solution

The fourth proportional to 6,918.28, 10,361.14 and 3,397.28 is: 5,087.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.28 : 10,361.14 = 3,397.28 : x
  2. Step 2: Convert to fraction form
    6,918.28/10,361.14 = 3,397.28/x
  3. Step 3: Cross multiply
    6,918.28x = 10,361.14 × 3,397.28
  4. Step 4: Simplify right side
    6,918.28x = 35,199,693.70
  5. Step 5: Solve for x
    x = 35,199,693.70/6,918.28
  6. Step 6: Final answer
    x = 5,087.93

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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.