Home / 6,940.12-10,399.86-4,163.53

Finding the Fourth Proportional to 6,940.12, 10,399.86 and 4,163.53

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Solution

The fourth proportional to 6,940.12, 10,399.86 and 4,163.53 is: 6,239.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,940.12 : 10,399.86 = 4,163.53 : x
  2. Step 2: Convert to fraction form
    6,940.12/10,399.86 = 4,163.53/x
  3. Step 3: Cross multiply
    6,940.12x = 10,399.86 × 4,163.53
  4. Step 4: Simplify right side
    6,940.12x = 43,300,129.11
  5. Step 5: Solve for x
    x = 43,300,129.11/6,940.12
  6. Step 6: Final answer
    x = 6,239.10

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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.