Home / 8,478.45-12,700.32-3,969.03

Finding the Fourth Proportional to 8,478.45, 12,700.32 and 3,969.03

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Solution

The fourth proportional to 8,478.45, 12,700.32 and 3,969.03 is: 5,945.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.45 : 12,700.32 = 3,969.03 : x
  2. Step 2: Convert to fraction form
    8,478.45/12,700.32 = 3,969.03/x
  3. Step 3: Cross multiply
    8,478.45x = 12,700.32 × 3,969.03
  4. Step 4: Simplify right side
    8,478.45x = 50,407,951.09
  5. Step 5: Solve for x
    x = 50,407,951.09/8,478.45
  6. Step 6: Final answer
    x = 5,945.42

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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.