Home / 2,615.82-3,923.64-1,228.38

Finding the Fourth Proportional to 2,615.82, 3,923.64 and 1,228.38

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Solution

The fourth proportional to 2,615.82, 3,923.64 and 1,228.38 is: 1,842.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,615.82 : 3,923.64 = 1,228.38 : x
  2. Step 2: Convert to fraction form
    2,615.82/3,923.64 = 1,228.38/x
  3. Step 3: Cross multiply
    2,615.82x = 3,923.64 × 1,228.38
  4. Step 4: Simplify right side
    2,615.82x = 4,819,720.90
  5. Step 5: Solve for x
    x = 4,819,720.90/2,615.82
  6. Step 6: Final answer
    x = 1,842.53

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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.