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Finding the Fourth Proportional to 5,137.96, 7,706.94 and 1,627.78

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Solution

The fourth proportional to 5,137.96, 7,706.94 and 1,627.78 is: 2,441.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,137.96 : 7,706.94 = 1,627.78 : x
  2. Step 2: Convert to fraction form
    5,137.96/7,706.94 = 1,627.78/x
  3. Step 3: Cross multiply
    5,137.96x = 7,706.94 × 1,627.78
  4. Step 4: Simplify right side
    5,137.96x = 12,545,202.79
  5. Step 5: Solve for x
    x = 12,545,202.79/5,137.96
  6. Step 6: Final answer
    x = 2,441.67

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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.