Home / 1,945.11-2,685.75-1,591.41

Finding the Fourth Proportional to 1,945.11, 2,685.75 and 1,591.41

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Solution

The fourth proportional to 1,945.11, 2,685.75 and 1,591.41 is: 2,197.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,945.11 : 2,685.75 = 1,591.41 : x
  2. Step 2: Convert to fraction form
    1,945.11/2,685.75 = 1,591.41/x
  3. Step 3: Cross multiply
    1,945.11x = 2,685.75 × 1,591.41
  4. Step 4: Simplify right side
    1,945.11x = 4,274,129.41
  5. Step 5: Solve for x
    x = 4,274,129.41/1,945.11
  6. Step 6: Final answer
    x = 2,197.37

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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.