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Finding the Fourth Proportional to 8,039.81, 12,059.72 and 4,343.78

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Solution

The fourth proportional to 8,039.81, 12,059.72 and 4,343.78 is: 6,515.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,039.81 : 12,059.72 = 4,343.78 : x
  2. Step 2: Convert to fraction form
    8,039.81/12,059.72 = 4,343.78/x
  3. Step 3: Cross multiply
    8,039.81x = 12,059.72 × 4,343.78
  4. Step 4: Simplify right side
    8,039.81x = 52,384,688.52
  5. Step 5: Solve for x
    x = 52,384,688.52/8,039.81
  6. Step 6: Final answer
    x = 6,515.67

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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.