Home / 2,072.70-2,860.38-1,188.54

Finding the Fourth Proportional to 2,072.70, 2,860.38 and 1,188.54

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Solution

The fourth proportional to 2,072.70, 2,860.38 and 1,188.54 is: 1,640.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,072.70 : 2,860.38 = 1,188.54 : x
  2. Step 2: Convert to fraction form
    2,072.70/2,860.38 = 1,188.54/x
  3. Step 3: Cross multiply
    2,072.70x = 2,860.38 × 1,188.54
  4. Step 4: Simplify right side
    2,072.70x = 3,399,676.05
  5. Step 5: Solve for x
    x = 3,399,676.05/2,072.70
  6. Step 6: Final answer
    x = 1,640.22

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1.5x scale

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.