Home / 1,367.35-1,887.71-1,219.73

Finding the Fourth Proportional to 1,367.35, 1,887.71 and 1,219.73

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Solution

The fourth proportional to 1,367.35, 1,887.71 and 1,219.73 is: 1,683.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.35 : 1,887.71 = 1,219.73 : x
  2. Step 2: Convert to fraction form
    1,367.35/1,887.71 = 1,219.73/x
  3. Step 3: Cross multiply
    1,367.35x = 1,887.71 × 1,219.73
  4. Step 4: Simplify right side
    1,367.35x = 2,302,480.98
  5. Step 5: Solve for x
    x = 2,302,480.98/1,367.35
  6. Step 6: Final answer
    x = 1,683.90

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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.