Home / 3,391.80-5,087.49-926.70

Finding the Fourth Proportional to 3,391.80, 5,087.49 and 926.70

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Solution

The fourth proportional to 3,391.80, 5,087.49 and 926.70 is: 1,389.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,391.80 : 5,087.49 = 926.70 : x
  2. Step 2: Convert to fraction form
    3,391.80/5,087.49 = 926.70/x
  3. Step 3: Cross multiply
    3,391.80x = 5,087.49 × 926.70
  4. Step 4: Simplify right side
    3,391.80x = 4,714,576.98
  5. Step 5: Solve for x
    x = 4,714,576.98/3,391.80
  6. Step 6: Final answer
    x = 1,389.99

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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.