Home / 3,391.41-5,087.88-1,311.43

Finding the Fourth Proportional to 3,391.41, 5,087.88 and 1,311.43

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Solution

The fourth proportional to 3,391.41, 5,087.88 and 1,311.43 is: 1,967.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.41 : 5,087.88 = 1,311.43 : x
  2. Step 2: Convert to fraction form
    3,391.41/5,087.88 = 1,311.43/x
  3. Step 3: Cross multiply
    3,391.41x = 5,087.88 × 1,311.43
  4. Step 4: Simplify right side
    3,391.41x = 6,672,398.47
  5. Step 5: Solve for x
    x = 6,672,398.47/3,391.41
  6. Step 6: Final answer
    x = 1,967.44

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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.