Home / 3,968.78-5,476.99-2,176.22

Finding the Fourth Proportional to 3,968.78, 5,476.99 and 2,176.22

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Solution

The fourth proportional to 3,968.78, 5,476.99 and 2,176.22 is: 3,003.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.78 : 5,476.99 = 2,176.22 : x
  2. Step 2: Convert to fraction form
    3,968.78/5,476.99 = 2,176.22/x
  3. Step 3: Cross multiply
    3,968.78x = 5,476.99 × 2,176.22
  4. Step 4: Simplify right side
    3,968.78x = 11,919,147.56
  5. Step 5: Solve for x
    x = 11,919,147.56/3,968.78
  6. Step 6: Final answer
    x = 3,003.23

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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.