Home / 1,945.21-2,684.39-1,105.92

Finding the Fourth Proportional to 1,945.21, 2,684.39 and 1,105.92

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Solution

The fourth proportional to 1,945.21, 2,684.39 and 1,105.92 is: 1,526.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.21 : 2,684.39 = 1,105.92 : x
  2. Step 2: Convert to fraction form
    1,945.21/2,684.39 = 1,105.92/x
  3. Step 3: Cross multiply
    1,945.21x = 2,684.39 × 1,105.92
  4. Step 4: Simplify right side
    1,945.21x = 2,968,709.93
  5. Step 5: Solve for x
    x = 2,968,709.93/1,945.21
  6. Step 6: Final answer
    x = 1,526.16

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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.