Home / 8,289.45-11,439.21-4,512.69

Finding the Fourth Proportional to 8,289.45, 11,439.21 and 4,512.69

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Solution

The fourth proportional to 8,289.45, 11,439.21 and 4,512.69 is: 6,227.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,289.45 : 11,439.21 = 4,512.69 : x
  2. Step 2: Convert to fraction form
    8,289.45/11,439.21 = 4,512.69/x
  3. Step 3: Cross multiply
    8,289.45x = 11,439.21 × 4,512.69
  4. Step 4: Simplify right side
    8,289.45x = 51,621,608.57
  5. Step 5: Solve for x
    x = 51,621,608.57/8,289.45
  6. Step 6: Final answer
    x = 6,227.39

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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.