Home / 2,828.91-3,905.82-1,767.09

Finding the Fourth Proportional to 2,828.91, 3,905.82 and 1,767.09

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Solution

The fourth proportional to 2,828.91, 3,905.82 and 1,767.09 is: 2,439.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,828.91 : 3,905.82 = 1,767.09 : x
  2. Step 2: Convert to fraction form
    2,828.91/3,905.82 = 1,767.09/x
  3. Step 3: Cross multiply
    2,828.91x = 3,905.82 × 1,767.09
  4. Step 4: Simplify right side
    2,828.91x = 6,901,935.46
  5. Step 5: Solve for x
    x = 6,901,935.46/2,828.91
  6. Step 6: Final answer
    x = 2,439.79

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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.