Home / 1,891.82-2,611.24-1,145.66

Finding the Fourth Proportional to 1,891.82, 2,611.24 and 1,145.66

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Solution

The fourth proportional to 1,891.82, 2,611.24 and 1,145.66 is: 1,581.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.82 : 2,611.24 = 1,145.66 : x
  2. Step 2: Convert to fraction form
    1,891.82/2,611.24 = 1,145.66/x
  3. Step 3: Cross multiply
    1,891.82x = 2,611.24 × 1,145.66
  4. Step 4: Simplify right side
    1,891.82x = 2,991,593.22
  5. Step 5: Solve for x
    x = 2,991,593.22/1,891.82
  6. Step 6: Final answer
    x = 1,581.33

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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.