Home / 8,124.20-12,170.10-4,230.80

Finding the Fourth Proportional to 8,124.20, 12,170.10 and 4,230.80

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Solution

The fourth proportional to 8,124.20, 12,170.10 and 4,230.80 is: 6,337.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,124.20 : 12,170.10 = 4,230.80 : x
  2. Step 2: Convert to fraction form
    8,124.20/12,170.10 = 4,230.80/x
  3. Step 3: Cross multiply
    8,124.20x = 12,170.10 × 4,230.80
  4. Step 4: Simplify right side
    8,124.20x = 51,489,259.08
  5. Step 5: Solve for x
    x = 51,489,259.08/8,124.20
  6. Step 6: Final answer
    x = 6,337.76

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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.