Home / 2,786.60-4,178.46-1,398.44

Finding the Fourth Proportional to 2,786.60, 4,178.46 and 1,398.44

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Solution

The fourth proportional to 2,786.60, 4,178.46 and 1,398.44 is: 2,096.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.60 : 4,178.46 = 1,398.44 : x
  2. Step 2: Convert to fraction form
    2,786.60/4,178.46 = 1,398.44/x
  3. Step 3: Cross multiply
    2,786.60x = 4,178.46 × 1,398.44
  4. Step 4: Simplify right side
    2,786.60x = 5,843,325.60
  5. Step 5: Solve for x
    x = 5,843,325.60/2,786.60
  6. Step 6: Final answer
    x = 2,096.94

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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.