Home / 7,822.78-11,731.64-2,627.44

Finding the Fourth Proportional to 7,822.78, 11,731.64 and 2,627.44

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Solution

The fourth proportional to 7,822.78, 11,731.64 and 2,627.44 is: 3,940.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,822.78 : 11,731.64 = 2,627.44 : x
  2. Step 2: Convert to fraction form
    7,822.78/11,731.64 = 2,627.44/x
  3. Step 3: Cross multiply
    7,822.78x = 11,731.64 × 2,627.44
  4. Step 4: Simplify right side
    7,822.78x = 30,824,137.74
  5. Step 5: Solve for x
    x = 30,824,137.74/7,822.78
  6. Step 6: Final answer
    x = 3,940.31

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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.