Home / 1,375.07-1,896.77-1,209.29

Finding the Fourth Proportional to 1,375.07, 1,896.77 and 1,209.29

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Solution

The fourth proportional to 1,375.07, 1,896.77 and 1,209.29 is: 1,668.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375.07 : 1,896.77 = 1,209.29 : x
  2. Step 2: Convert to fraction form
    1,375.07/1,896.77 = 1,209.29/x
  3. Step 3: Cross multiply
    1,375.07x = 1,896.77 × 1,209.29
  4. Step 4: Simplify right side
    1,375.07x = 2,293,738.95
  5. Step 5: Solve for x
    x = 2,293,738.95/1,375.07
  6. Step 6: Final answer
    x = 1,668.09

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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.