Home / 1,945.85-2,685.16-1,106.43

Finding the Fourth Proportional to 1,945.85, 2,685.16 and 1,106.43

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Solution

The fourth proportional to 1,945.85, 2,685.16 and 1,106.43 is: 1,526.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.85 : 2,685.16 = 1,106.43 : x
  2. Step 2: Convert to fraction form
    1,945.85/2,685.16 = 1,106.43/x
  3. Step 3: Cross multiply
    1,945.85x = 2,685.16 × 1,106.43
  4. Step 4: Simplify right side
    1,945.85x = 2,970,936.05
  5. Step 5: Solve for x
    x = 2,970,936.05/1,945.85
  6. Step 6: Final answer
    x = 1,526.81

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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.