Home / 1,268.07-1,750.68-1,189.62

Finding the Fourth Proportional to 1,268.07, 1,750.68 and 1,189.62

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Solution

The fourth proportional to 1,268.07, 1,750.68 and 1,189.62 is: 1,642.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.07 : 1,750.68 = 1,189.62 : x
  2. Step 2: Convert to fraction form
    1,268.07/1,750.68 = 1,189.62/x
  3. Step 3: Cross multiply
    1,268.07x = 1,750.68 × 1,189.62
  4. Step 4: Simplify right side
    1,268.07x = 2,082,643.94
  5. Step 5: Solve for x
    x = 2,082,643.94/1,268.07
  6. Step 6: Final answer
    x = 1,642.37

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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.