Home / 1,912.70-2,866.35-1,180.10

Finding the Fourth Proportional to 1,912.70, 2,866.35 and 1,180.10

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Solution

The fourth proportional to 1,912.70, 2,866.35 and 1,180.10 is: 1,768.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.70 : 2,866.35 = 1,180.10 : x
  2. Step 2: Convert to fraction form
    1,912.70/2,866.35 = 1,180.10/x
  3. Step 3: Cross multiply
    1,912.70x = 2,866.35 × 1,180.10
  4. Step 4: Simplify right side
    1,912.70x = 3,382,579.64
  5. Step 5: Solve for x
    x = 3,382,579.64/1,912.70
  6. Step 6: Final answer
    x = 1,768.48

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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.