Home / 3,921.78-5,884.29-2,072.45

Finding the Fourth Proportional to 3,921.78, 5,884.29 and 2,072.45

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Solution

The fourth proportional to 3,921.78, 5,884.29 and 2,072.45 is: 3,109.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921.78 : 5,884.29 = 2,072.45 : x
  2. Step 2: Convert to fraction form
    3,921.78/5,884.29 = 2,072.45/x
  3. Step 3: Cross multiply
    3,921.78x = 5,884.29 × 2,072.45
  4. Step 4: Simplify right side
    3,921.78x = 12,194,896.81
  5. Step 5: Solve for x
    x = 12,194,896.81/3,921.78
  6. Step 6: Final answer
    x = 3,109.53

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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.