Home / 3,958.78-5,467.44-2,638.09

Finding the Fourth Proportional to 3,958.78, 5,467.44 and 2,638.09

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Solution

The fourth proportional to 3,958.78, 5,467.44 and 2,638.09 is: 3,643.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,958.78 : 5,467.44 = 2,638.09 : x
  2. Step 2: Convert to fraction form
    3,958.78/5,467.44 = 2,638.09/x
  3. Step 3: Cross multiply
    3,958.78x = 5,467.44 × 2,638.09
  4. Step 4: Simplify right side
    3,958.78x = 14,423,598.79
  5. Step 5: Solve for x
    x = 14,423,598.79/3,958.78
  6. Step 6: Final answer
    x = 3,643.45

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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.