Home / 1,489.82-2,231.49-1,422.14

Finding the Fourth Proportional to 1,489.82, 2,231.49 and 1,422.14

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Solution

The fourth proportional to 1,489.82, 2,231.49 and 1,422.14 is: 2,130.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.82 : 2,231.49 = 1,422.14 : x
  2. Step 2: Convert to fraction form
    1,489.82/2,231.49 = 1,422.14/x
  3. Step 3: Cross multiply
    1,489.82x = 2,231.49 × 1,422.14
  4. Step 4: Simplify right side
    1,489.82x = 3,173,491.19
  5. Step 5: Solve for x
    x = 3,173,491.19/1,489.82
  6. Step 6: Final answer
    x = 2,130.12

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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.