Home / 1,842.45-2,540.82-1,422.14

Finding the Fourth Proportional to 1,842.45, 2,540.82 and 1,422.14

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Solution

The fourth proportional to 1,842.45, 2,540.82 and 1,422.14 is: 1,961.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,842.45 : 2,540.82 = 1,422.14 : x
  2. Step 2: Convert to fraction form
    1,842.45/2,540.82 = 1,422.14/x
  3. Step 3: Cross multiply
    1,842.45x = 2,540.82 × 1,422.14
  4. Step 4: Simplify right side
    1,842.45x = 3,613,389.05
  5. Step 5: Solve for x
    x = 3,613,389.05/1,842.45
  6. Step 6: Final answer
    x = 1,961.19

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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.