Home / 6,918.78-10,372.41-3,219.06

Finding the Fourth Proportional to 6,918.78, 10,372.41 and 3,219.06

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Solution

The fourth proportional to 6,918.78, 10,372.41 and 3,219.06 is: 4,825.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,918.78 : 10,372.41 = 3,219.06 : x
  2. Step 2: Convert to fraction form
    6,918.78/10,372.41 = 3,219.06/x
  3. Step 3: Cross multiply
    6,918.78x = 10,372.41 × 3,219.06
  4. Step 4: Simplify right side
    6,918.78x = 33,389,410.13
  5. Step 5: Solve for x
    x = 33,389,410.13/6,918.78
  6. Step 6: Final answer
    x = 4,825.91

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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.