Home / 1,228.44-1,694.88-1,072.66

Finding the Fourth Proportional to 1,228.44, 1,694.88 and 1,072.66

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Solution

The fourth proportional to 1,228.44, 1,694.88 and 1,072.66 is: 1,479.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.44 : 1,694.88 = 1,072.66 : x
  2. Step 2: Convert to fraction form
    1,228.44/1,694.88 = 1,072.66/x
  3. Step 3: Cross multiply
    1,228.44x = 1,694.88 × 1,072.66
  4. Step 4: Simplify right side
    1,228.44x = 1,818,029.98
  5. Step 5: Solve for x
    x = 1,818,029.98/1,228.44
  6. Step 6: Final answer
    x = 1,479.95

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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.