Home / 3,977.43-5,485.75-2,782.02

Finding the Fourth Proportional to 3,977.43, 5,485.75 and 2,782.02

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Solution

The fourth proportional to 3,977.43, 5,485.75 and 2,782.02 is: 3,837.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.43 : 5,485.75 = 2,782.02 : x
  2. Step 2: Convert to fraction form
    3,977.43/5,485.75 = 2,782.02/x
  3. Step 3: Cross multiply
    3,977.43x = 5,485.75 × 2,782.02
  4. Step 4: Simplify right side
    3,977.43x = 15,261,466.22
  5. Step 5: Solve for x
    x = 15,261,466.22/3,977.43
  6. Step 6: Final answer
    x = 3,837.02

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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.