Home / 2,655.41-3,986.19-1,425.22

Finding the Fourth Proportional to 2,655.41, 3,986.19 and 1,425.22

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Solution

The fourth proportional to 2,655.41, 3,986.19 and 1,425.22 is: 2,139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,655.41 : 3,986.19 = 1,425.22 : x
  2. Step 2: Convert to fraction form
    2,655.41/3,986.19 = 1,425.22/x
  3. Step 3: Cross multiply
    2,655.41x = 3,986.19 × 1,425.22
  4. Step 4: Simplify right side
    2,655.41x = 5,681,194.95
  5. Step 5: Solve for x
    x = 5,681,194.95/2,655.41
  6. Step 6: Final answer
    x = 2,139.48

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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.