Home / 2,790.82-3,851.37-1,672.60

Finding the Fourth Proportional to 2,790.82, 3,851.37 and 1,672.60

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Solution

The fourth proportional to 2,790.82, 3,851.37 and 1,672.60 is: 2,308.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790.82 : 3,851.37 = 1,672.60 : x
  2. Step 2: Convert to fraction form
    2,790.82/3,851.37 = 1,672.60/x
  3. Step 3: Cross multiply
    2,790.82x = 3,851.37 × 1,672.60
  4. Step 4: Simplify right side
    2,790.82x = 6,441,801.46
  5. Step 5: Solve for x
    x = 6,441,801.46/2,790.82
  6. Step 6: Final answer
    x = 2,308.21

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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.