Home / 1,645.26-2,453.84-1,619.88

Finding the Fourth Proportional to 1,645.26, 2,453.84 and 1,619.88

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Solution

The fourth proportional to 1,645.26, 2,453.84 and 1,619.88 is: 2,415.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,645.26 : 2,453.84 = 1,619.88 : x
  2. Step 2: Convert to fraction form
    1,645.26/2,453.84 = 1,619.88/x
  3. Step 3: Cross multiply
    1,645.26x = 2,453.84 × 1,619.88
  4. Step 4: Simplify right side
    1,645.26x = 3,974,918.24
  5. Step 5: Solve for x
    x = 3,974,918.24/1,645.26
  6. Step 6: Final answer
    x = 2,415.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.