Home / 5,190.72-7,786.08-3,137.60

Finding the Fourth Proportional to 5,190.72, 7,786.08 and 3,137.60

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Solution

The fourth proportional to 5,190.72, 7,786.08 and 3,137.60 is: 4,706.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.72 : 7,786.08 = 3,137.60 : x
  2. Step 2: Convert to fraction form
    5,190.72/7,786.08 = 3,137.60/x
  3. Step 3: Cross multiply
    5,190.72x = 7,786.08 × 3,137.60
  4. Step 4: Simplify right side
    5,190.72x = 24,429,604.61
  5. Step 5: Solve for x
    x = 24,429,604.61/5,190.72
  6. Step 6: Final answer
    x = 4,706.40

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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.