Home / 3,904.75-5,388.56-2,136.37

Finding the Fourth Proportional to 3,904.75, 5,388.56 and 2,136.37

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Solution

The fourth proportional to 3,904.75, 5,388.56 and 2,136.37 is: 2,948.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,904.75 : 5,388.56 = 2,136.37 : x
  2. Step 2: Convert to fraction form
    3,904.75/5,388.56 = 2,136.37/x
  3. Step 3: Cross multiply
    3,904.75x = 5,388.56 × 2,136.37
  4. Step 4: Simplify right side
    3,904.75x = 11,511,957.93
  5. Step 5: Solve for x
    x = 11,511,957.93/3,904.75
  6. Step 6: Final answer
    x = 2,948.19

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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.