Home / 1,891.22-2,608.44-1,331.84

Finding the Fourth Proportional to 1,891.22, 2,608.44 and 1,331.84

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Solution

The fourth proportional to 1,891.22, 2,608.44 and 1,331.84 is: 1,836.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.22 : 2,608.44 = 1,331.84 : x
  2. Step 2: Convert to fraction form
    1,891.22/2,608.44 = 1,331.84/x
  3. Step 3: Cross multiply
    1,891.22x = 2,608.44 × 1,331.84
  4. Step 4: Simplify right side
    1,891.22x = 3,474,011.69
  5. Step 5: Solve for x
    x = 3,474,011.69/1,891.22
  6. Step 6: Final answer
    x = 1,836.92

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1.5x scale

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.