Home / 2,837.43-3,915.74-2,128.07

Finding the Fourth Proportional to 2,837.43, 3,915.74 and 2,128.07

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Solution

The fourth proportional to 2,837.43, 3,915.74 and 2,128.07 is: 2,936.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,837.43 : 3,915.74 = 2,128.07 : x
  2. Step 2: Convert to fraction form
    2,837.43/3,915.74 = 2,128.07/x
  3. Step 3: Cross multiply
    2,837.43x = 3,915.74 × 2,128.07
  4. Step 4: Simplify right side
    2,837.43x = 8,332,983.93
  5. Step 5: Solve for x
    x = 8,332,983.93/2,837.43
  6. Step 6: Final answer
    x = 2,936.81

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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.