Home / 7,729.78-11,592.60-2,181.82

Finding the Fourth Proportional to 7,729.78, 11,592.60 and 2,181.82

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Solution

The fourth proportional to 7,729.78, 11,592.60 and 2,181.82 is: 3,272.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,729.78 : 11,592.60 = 2,181.82 : x
  2. Step 2: Convert to fraction form
    7,729.78/11,592.60 = 2,181.82/x
  3. Step 3: Cross multiply
    7,729.78x = 11,592.60 × 2,181.82
  4. Step 4: Simplify right side
    7,729.78x = 25,292,966.53
  5. Step 5: Solve for x
    x = 25,292,966.53/7,729.78
  6. Step 6: Final answer
    x = 3,272.15

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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.