Home / 8,138.53-12,191.61-3,966.37

Finding the Fourth Proportional to 8,138.53, 12,191.61 and 3,966.37

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Solution

The fourth proportional to 8,138.53, 12,191.61 and 3,966.37 is: 5,941.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.53 : 12,191.61 = 3,966.37 : x
  2. Step 2: Convert to fraction form
    8,138.53/12,191.61 = 3,966.37/x
  3. Step 3: Cross multiply
    8,138.53x = 12,191.61 × 3,966.37
  4. Step 4: Simplify right side
    8,138.53x = 48,356,420.55
  5. Step 5: Solve for x
    x = 48,356,420.55/8,138.53
  6. Step 6: Final answer
    x = 5,941.67

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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.