Home / 3,391.03-5,087.32-1,311.05

Finding the Fourth Proportional to 3,391.03, 5,087.32 and 1,311.05

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Solution

The fourth proportional to 3,391.03, 5,087.32 and 1,311.05 is: 1,966.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.03 : 5,087.32 = 1,311.05 : x
  2. Step 2: Convert to fraction form
    3,391.03/5,087.32 = 1,311.05/x
  3. Step 3: Cross multiply
    3,391.03x = 5,087.32 × 1,311.05
  4. Step 4: Simplify right side
    3,391.03x = 6,669,721.25
  5. Step 5: Solve for x
    x = 6,669,721.25/3,391.03
  6. Step 6: Final answer
    x = 1,966.87

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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.