Home / 3,391.06-5,087.37-1,311.08

Finding the Fourth Proportional to 3,391.06, 5,087.37 and 1,311.08

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Solution

The fourth proportional to 3,391.06, 5,087.37 and 1,311.08 is: 1,966.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.06 : 5,087.37 = 1,311.08 : x
  2. Step 2: Convert to fraction form
    3,391.06/5,087.37 = 1,311.08/x
  3. Step 3: Cross multiply
    3,391.06x = 5,087.37 × 1,311.08
  4. Step 4: Simplify right side
    3,391.06x = 6,669,942.50
  5. Step 5: Solve for x
    x = 6,669,942.50/3,391.06
  6. Step 6: Final answer
    x = 1,966.92

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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.