Home / 2,851.92-3,934.08-1,908.36

Finding the Fourth Proportional to 2,851.92, 3,934.08 and 1,908.36

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Solution

The fourth proportional to 2,851.92, 3,934.08 and 1,908.36 is: 2,632.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,851.92 : 3,934.08 = 1,908.36 : x
  2. Step 2: Convert to fraction form
    2,851.92/3,934.08 = 1,908.36/x
  3. Step 3: Cross multiply
    2,851.92x = 3,934.08 × 1,908.36
  4. Step 4: Simplify right side
    2,851.92x = 7,507,640.91
  5. Step 5: Solve for x
    x = 7,507,640.91/2,851.92
  6. Step 6: Final answer
    x = 2,632.49

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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.