Home / 2,111.09-2,912.13-1,481.36

Finding the Fourth Proportional to 2,111.09, 2,912.13 and 1,481.36

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Solution

The fourth proportional to 2,111.09, 2,912.13 and 1,481.36 is: 2,043.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,111.09 : 2,912.13 = 1,481.36 : x
  2. Step 2: Convert to fraction form
    2,111.09/2,912.13 = 1,481.36/x
  3. Step 3: Cross multiply
    2,111.09x = 2,912.13 × 1,481.36
  4. Step 4: Simplify right side
    2,111.09x = 4,313,898.34
  5. Step 5: Solve for x
    x = 4,313,898.34/2,111.09
  6. Step 6: Final answer
    x = 2,043.45

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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.