Home / 2,647.44-3,968.67-1,185.78

Finding the Fourth Proportional to 2,647.44, 3,968.67 and 1,185.78

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Solution

The fourth proportional to 2,647.44, 3,968.67 and 1,185.78 is: 1,777.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,647.44 : 3,968.67 = 1,185.78 : x
  2. Step 2: Convert to fraction form
    2,647.44/3,968.67 = 1,185.78/x
  3. Step 3: Cross multiply
    2,647.44x = 3,968.67 × 1,185.78
  4. Step 4: Simplify right side
    2,647.44x = 4,705,969.51
  5. Step 5: Solve for x
    x = 4,705,969.51/2,647.44
  6. Step 6: Final answer
    x = 1,777.55

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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.