Home / 1,945.07-2,684.26-1,105.80

Finding the Fourth Proportional to 1,945.07, 2,684.26 and 1,105.80

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Solution

The fourth proportional to 1,945.07, 2,684.26 and 1,105.80 is: 1,526.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.07 : 2,684.26 = 1,105.80 : x
  2. Step 2: Convert to fraction form
    1,945.07/2,684.26 = 1,105.80/x
  3. Step 3: Cross multiply
    1,945.07x = 2,684.26 × 1,105.80
  4. Step 4: Simplify right side
    1,945.07x = 2,968,249.18
  5. Step 5: Solve for x
    x = 2,968,249.18/1,945.07
  6. Step 6: Final answer
    x = 1,526.04

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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.