Home / 3,728.68-5,146.26-2,156.92

Finding the Fourth Proportional to 3,728.68, 5,146.26 and 2,156.92

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Solution

The fourth proportional to 3,728.68, 5,146.26 and 2,156.92 is: 2,976.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,728.68 : 5,146.26 = 2,156.92 : x
  2. Step 2: Convert to fraction form
    3,728.68/5,146.26 = 2,156.92/x
  3. Step 3: Cross multiply
    3,728.68x = 5,146.26 × 2,156.92
  4. Step 4: Simplify right side
    3,728.68x = 11,100,071.12
  5. Step 5: Solve for x
    x = 11,100,071.12/3,728.68
  6. Step 6: Final answer
    x = 2,976.94

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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.