Home / 4,104.78-5,662.79-2,778.02

Finding the Fourth Proportional to 4,104.78, 5,662.79 and 2,778.02

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Solution

The fourth proportional to 4,104.78, 5,662.79 and 2,778.02 is: 3,832.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,104.78 : 5,662.79 = 2,778.02 : x
  2. Step 2: Convert to fraction form
    4,104.78/5,662.79 = 2,778.02/x
  3. Step 3: Cross multiply
    4,104.78x = 5,662.79 × 2,778.02
  4. Step 4: Simplify right side
    4,104.78x = 15,731,343.88
  5. Step 5: Solve for x
    x = 15,731,343.88/4,104.78
  6. Step 6: Final answer
    x = 3,832.45

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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.