Home / 6,917.90-10,375.32-1,986.44

Finding the Fourth Proportional to 6,917.90, 10,375.32 and 1,986.44

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Solution

The fourth proportional to 6,917.90, 10,375.32 and 1,986.44 is: 2,979.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,917.90 : 10,375.32 = 1,986.44 : x
  2. Step 2: Convert to fraction form
    6,917.90/10,375.32 = 1,986.44/x
  3. Step 3: Cross multiply
    6,917.90x = 10,375.32 × 1,986.44
  4. Step 4: Simplify right side
    6,917.90x = 20,609,984.05
  5. Step 5: Solve for x
    x = 20,609,984.05/6,917.90
  6. Step 6: Final answer
    x = 2,979.22

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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.