Home / 3,846.34-5,311.05-3,138.28

Finding the Fourth Proportional to 3,846.34, 5,311.05 and 3,138.28

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Solution

The fourth proportional to 3,846.34, 5,311.05 and 3,138.28 is: 4,333.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,846.34 : 5,311.05 = 3,138.28 : x
  2. Step 2: Convert to fraction form
    3,846.34/5,311.05 = 3,138.28/x
  3. Step 3: Cross multiply
    3,846.34x = 5,311.05 × 3,138.28
  4. Step 4: Simplify right side
    3,846.34x = 16,667,561.99
  5. Step 5: Solve for x
    x = 16,667,561.99/3,846.34
  6. Step 6: Final answer
    x = 4,333.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.