Home / 1,418.82-2,124.12-1,282.20

Finding the Fourth Proportional to 1,418.82, 2,124.12 and 1,282.20

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Solution

The fourth proportional to 1,418.82, 2,124.12 and 1,282.20 is: 1,919.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,418.82 : 2,124.12 = 1,282.20 : x
  2. Step 2: Convert to fraction form
    1,418.82/2,124.12 = 1,282.20/x
  3. Step 3: Cross multiply
    1,418.82x = 2,124.12 × 1,282.20
  4. Step 4: Simplify right side
    1,418.82x = 2,723,546.66
  5. Step 5: Solve for x
    x = 2,723,546.66/1,418.82
  6. Step 6: Final answer
    x = 1,919.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.