Home / 3,391.26-5,087.28-1,311.66

Finding the Fourth Proportional to 3,391.26, 5,087.28 and 1,311.66

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Solution

The fourth proportional to 3,391.26, 5,087.28 and 1,311.66 is: 1,967.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.26 : 5,087.28 = 1,311.66 : x
  2. Step 2: Convert to fraction form
    3,391.26/5,087.28 = 1,311.66/x
  3. Step 3: Cross multiply
    3,391.26x = 5,087.28 × 1,311.66
  4. Step 4: Simplify right side
    3,391.26x = 6,672,781.68
  5. Step 5: Solve for x
    x = 6,672,781.68/3,391.26
  6. Step 6: Final answer
    x = 1,967.64

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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.