Home / 3,940.07-5,436.70-2,261.54

Finding the Fourth Proportional to 3,940.07, 5,436.70 and 2,261.54

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Solution

The fourth proportional to 3,940.07, 5,436.70 and 2,261.54 is: 3,120.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,940.07 : 5,436.70 = 2,261.54 : x
  2. Step 2: Convert to fraction form
    3,940.07/5,436.70 = 2,261.54/x
  3. Step 3: Cross multiply
    3,940.07x = 5,436.70 × 2,261.54
  4. Step 4: Simplify right side
    3,940.07x = 12,295,322.46
  5. Step 5: Solve for x
    x = 12,295,322.46/3,940.07
  6. Step 6: Final answer
    x = 3,120.59

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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.