Home / 1,759.12-2,426.43-1,128.65

Finding the Fourth Proportional to 1,759.12, 2,426.43 and 1,128.65

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Solution

The fourth proportional to 1,759.12, 2,426.43 and 1,128.65 is: 1,556.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759.12 : 2,426.43 = 1,128.65 : x
  2. Step 2: Convert to fraction form
    1,759.12/2,426.43 = 1,128.65/x
  3. Step 3: Cross multiply
    1,759.12x = 2,426.43 × 1,128.65
  4. Step 4: Simplify right side
    1,759.12x = 2,738,578.09
  5. Step 5: Solve for x
    x = 2,738,578.09/1,759.12
  6. Step 6: Final answer
    x = 1,556.79

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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.