Home / 8,120.60-12,180.55-4,826.43

Finding the Fourth Proportional to 8,120.60, 12,180.55 and 4,826.43

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Solution

The fourth proportional to 8,120.60, 12,180.55 and 4,826.43 is: 7,239.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.60 : 12,180.55 = 4,826.43 : x
  2. Step 2: Convert to fraction form
    8,120.60/12,180.55 = 4,826.43/x
  3. Step 3: Cross multiply
    8,120.60x = 12,180.55 × 4,826.43
  4. Step 4: Simplify right side
    8,120.60x = 58,788,571.94
  5. Step 5: Solve for x
    x = 58,788,571.94/8,120.60
  6. Step 6: Final answer
    x = 7,239.44

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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.