Home / 1,391.75-2,089.44-1,176.69

Finding the Fourth Proportional to 1,391.75, 2,089.44 and 1,176.69

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Solution

The fourth proportional to 1,391.75, 2,089.44 and 1,176.69 is: 1,766.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391.75 : 2,089.44 = 1,176.69 : x
  2. Step 2: Convert to fraction form
    1,391.75/2,089.44 = 1,176.69/x
  3. Step 3: Cross multiply
    1,391.75x = 2,089.44 × 1,176.69
  4. Step 4: Simplify right side
    1,391.75x = 2,458,623.15
  5. Step 5: Solve for x
    x = 2,458,623.15/1,391.75
  6. Step 6: Final answer
    x = 1,766.58

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1.5x scale

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.