Home / 5,161.66-7,123.30-3,172.86

Finding the Fourth Proportional to 5,161.66, 7,123.30 and 3,172.86

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Solution

The fourth proportional to 5,161.66, 7,123.30 and 3,172.86 is: 4,378.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161.66 : 7,123.30 = 3,172.86 : x
  2. Step 2: Convert to fraction form
    5,161.66/7,123.30 = 3,172.86/x
  3. Step 3: Cross multiply
    5,161.66x = 7,123.30 × 3,172.86
  4. Step 4: Simplify right side
    5,161.66x = 22,601,217.92
  5. Step 5: Solve for x
    x = 22,601,217.92/5,161.66
  6. Step 6: Final answer
    x = 4,378.67

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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.