Home / 2,785.73-4,178.07-1,398.69

Finding the Fourth Proportional to 2,785.73, 4,178.07 and 1,398.69

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Solution

The fourth proportional to 2,785.73, 4,178.07 and 1,398.69 is: 2,097.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.73 : 4,178.07 = 1,398.69 : x
  2. Step 2: Convert to fraction form
    2,785.73/4,178.07 = 1,398.69/x
  3. Step 3: Cross multiply
    2,785.73x = 4,178.07 × 1,398.69
  4. Step 4: Simplify right side
    2,785.73x = 5,843,824.73
  5. Step 5: Solve for x
    x = 5,843,824.73/2,785.73
  6. Step 6: Final answer
    x = 2,097.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.