Home / 8,138.08-12,205.20-3,752.80

Finding the Fourth Proportional to 8,138.08, 12,205.20 and 3,752.80

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Solution

The fourth proportional to 8,138.08, 12,205.20 and 3,752.80 is: 5,628.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,138.08 : 12,205.20 = 3,752.80 : x
  2. Step 2: Convert to fraction form
    8,138.08/12,205.20 = 3,752.80/x
  3. Step 3: Cross multiply
    8,138.08x = 12,205.20 × 3,752.80
  4. Step 4: Simplify right side
    8,138.08x = 45,803,674.56
  5. Step 5: Solve for x
    x = 45,803,674.56/8,138.08
  6. Step 6: Final answer
    x = 5,628.31

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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.