Home / 1,220.06-1,682.71-1,072.38

Finding the Fourth Proportional to 1,220.06, 1,682.71 and 1,072.38

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Solution

The fourth proportional to 1,220.06, 1,682.71 and 1,072.38 is: 1,479.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.06 : 1,682.71 = 1,072.38 : x
  2. Step 2: Convert to fraction form
    1,220.06/1,682.71 = 1,072.38/x
  3. Step 3: Cross multiply
    1,220.06x = 1,682.71 × 1,072.38
  4. Step 4: Simplify right side
    1,220.06x = 1,804,504.55
  5. Step 5: Solve for x
    x = 1,804,504.55/1,220.06
  6. Step 6: Final answer
    x = 1,479.03

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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.