Home / 1,912.66-2,869.26-727.06

Finding the Fourth Proportional to 1,912.66, 2,869.26 and 727.06

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Solution

The fourth proportional to 1,912.66, 2,869.26 and 727.06 is: 1,090.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,912.66 : 2,869.26 = 727.06 : x
  2. Step 2: Convert to fraction form
    1,912.66/2,869.26 = 727.06/x
  3. Step 3: Cross multiply
    1,912.66x = 2,869.26 × 727.06
  4. Step 4: Simplify right side
    1,912.66x = 2,086,124.18
  5. Step 5: Solve for x
    x = 2,086,124.18/1,912.66
  6. Step 6: Final answer
    x = 1,090.69

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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.