Home / 3,729.43-5,145.15-2,157.22

Finding the Fourth Proportional to 3,729.43, 5,145.15 and 2,157.22

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Solution

The fourth proportional to 3,729.43, 5,145.15 and 2,157.22 is: 2,976.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,729.43 : 5,145.15 = 2,157.22 : x
  2. Step 2: Convert to fraction form
    3,729.43/5,145.15 = 2,157.22/x
  3. Step 3: Cross multiply
    3,729.43x = 5,145.15 × 2,157.22
  4. Step 4: Simplify right side
    3,729.43x = 11,099,220.48
  5. Step 5: Solve for x
    x = 11,099,220.48/3,729.43
  6. Step 6: Final answer
    x = 2,976.12

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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.