Home / 5,231.40-7,850.70-3,771.78

Finding the Fourth Proportional to 5,231.40, 7,850.70 and 3,771.78

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Solution

The fourth proportional to 5,231.40, 7,850.70 and 3,771.78 is: 5,660.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.40 : 7,850.70 = 3,771.78 : x
  2. Step 2: Convert to fraction form
    5,231.40/7,850.70 = 3,771.78/x
  3. Step 3: Cross multiply
    5,231.40x = 7,850.70 × 3,771.78
  4. Step 4: Simplify right side
    5,231.40x = 29,611,113.25
  5. Step 5: Solve for x
    x = 29,611,113.25/5,231.40
  6. Step 6: Final answer
    x = 5,660.27

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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.