Home / 2,627.04-3,940.01-1,239.78

Finding the Fourth Proportional to 2,627.04, 3,940.01 and 1,239.78

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Solution

The fourth proportional to 2,627.04, 3,940.01 and 1,239.78 is: 1,859.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,627.04 : 3,940.01 = 1,239.78 : x
  2. Step 2: Convert to fraction form
    2,627.04/3,940.01 = 1,239.78/x
  3. Step 3: Cross multiply
    2,627.04x = 3,940.01 × 1,239.78
  4. Step 4: Simplify right side
    2,627.04x = 4,884,745.60
  5. Step 5: Solve for x
    x = 4,884,745.60/2,627.04
  6. Step 6: Final answer
    x = 1,859.41

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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.