Home / 8,288.20-12,423.28-4,131.28

Finding the Fourth Proportional to 8,288.20, 12,423.28 and 4,131.28

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Solution

The fourth proportional to 8,288.20, 12,423.28 and 4,131.28 is: 6,192.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,288.20 : 12,423.28 = 4,131.28 : x
  2. Step 2: Convert to fraction form
    8,288.20/12,423.28 = 4,131.28/x
  3. Step 3: Cross multiply
    8,288.20x = 12,423.28 × 4,131.28
  4. Step 4: Simplify right side
    8,288.20x = 51,324,048.20
  5. Step 5: Solve for x
    x = 51,324,048.20/8,288.20
  6. Step 6: Final answer
    x = 6,192.42

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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.