Home / 1,821.89-2,733.75-727.18

Finding the Fourth Proportional to 1,821.89, 2,733.75 and 727.18

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Solution

The fourth proportional to 1,821.89, 2,733.75 and 727.18 is: 1,091.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.89 : 2,733.75 = 727.18 : x
  2. Step 2: Convert to fraction form
    1,821.89/2,733.75 = 727.18/x
  3. Step 3: Cross multiply
    1,821.89x = 2,733.75 × 727.18
  4. Step 4: Simplify right side
    1,821.89x = 1,987,921.49
  5. Step 5: Solve for x
    x = 1,987,921.49/1,821.89
  6. Step 6: Final answer
    x = 1,091.13

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1.5x scale

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.