Home / 3,729.26-5,145.98-2,157.06

Finding the Fourth Proportional to 3,729.26, 5,145.98 and 2,157.06

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Solution

The fourth proportional to 3,729.26, 5,145.98 and 2,157.06 is: 2,976.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.26 : 5,145.98 = 2,157.06 : x
  2. Step 2: Convert to fraction form
    3,729.26/5,145.98 = 2,157.06/x
  3. Step 3: Cross multiply
    3,729.26x = 5,145.98 × 2,157.06
  4. Step 4: Simplify right side
    3,729.26x = 11,100,187.62
  5. Step 5: Solve for x
    x = 11,100,187.62/3,729.26
  6. Step 6: Final answer
    x = 2,976.51

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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.