Home / 3,922.44-5,412.96-2,154.06

Finding the Fourth Proportional to 3,922.44, 5,412.96 and 2,154.06

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Solution

The fourth proportional to 3,922.44, 5,412.96 and 2,154.06 is: 2,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.44 : 5,412.96 = 2,154.06 : x
  2. Step 2: Convert to fraction form
    3,922.44/5,412.96 = 2,154.06/x
  3. Step 3: Cross multiply
    3,922.44x = 5,412.96 × 2,154.06
  4. Step 4: Simplify right side
    3,922.44x = 11,659,840.62
  5. Step 5: Solve for x
    x = 11,659,840.62/3,922.44
  6. Step 6: Final answer
    x = 2,972.60

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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.