Home / 3,922.41-5,415.46-2,431.91

Finding the Fourth Proportional to 3,922.41, 5,415.46 and 2,431.91

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Solution

The fourth proportional to 3,922.41, 5,415.46 and 2,431.91 is: 3,357.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.41 : 5,415.46 = 2,431.91 : x
  2. Step 2: Convert to fraction form
    3,922.41/5,415.46 = 2,431.91/x
  3. Step 3: Cross multiply
    3,922.41x = 5,415.46 × 2,431.91
  4. Step 4: Simplify right side
    3,922.41x = 13,169,911.33
  5. Step 5: Solve for x
    x = 13,169,911.33/3,922.41
  6. Step 6: Final answer
    x = 3,357.61

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1.5x scale

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.