Home / 3,728.35-5,143.99-2,156.23

Finding the Fourth Proportional to 3,728.35, 5,143.99 and 2,156.23

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Solution

The fourth proportional to 3,728.35, 5,143.99 and 2,156.23 is: 2,974.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.35 : 5,143.99 = 2,156.23 : x
  2. Step 2: Convert to fraction form
    3,728.35/5,143.99 = 2,156.23/x
  3. Step 3: Cross multiply
    3,728.35x = 5,143.99 × 2,156.23
  4. Step 4: Simplify right side
    3,728.35x = 11,091,625.56
  5. Step 5: Solve for x
    x = 11,091,625.56/3,728.35
  6. Step 6: Final answer
    x = 2,974.94

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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.