Home / 2,405.42-3,608.12-1,921.54

Finding the Fourth Proportional to 2,405.42, 3,608.12 and 1,921.54

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Solution

The fourth proportional to 2,405.42, 3,608.12 and 1,921.54 is: 2,882.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.42 : 3,608.12 = 1,921.54 : x
  2. Step 2: Convert to fraction form
    2,405.42/3,608.12 = 1,921.54/x
  3. Step 3: Cross multiply
    2,405.42x = 3,608.12 × 1,921.54
  4. Step 4: Simplify right side
    2,405.42x = 6,933,146.90
  5. Step 5: Solve for x
    x = 6,933,146.90/2,405.42
  6. Step 6: Final answer
    x = 2,882.31

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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.