Home / 8,125.20-12,171.60-5,662.80

Finding the Fourth Proportional to 8,125.20, 12,171.60 and 5,662.80

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Solution

The fourth proportional to 8,125.20, 12,171.60 and 5,662.80 is: 8,482.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.20 : 12,171.60 = 5,662.80 : x
  2. Step 2: Convert to fraction form
    8,125.20/12,171.60 = 5,662.80/x
  3. Step 3: Cross multiply
    8,125.20x = 12,171.60 × 5,662.80
  4. Step 4: Simplify right side
    8,125.20x = 68,925,336.48
  5. Step 5: Solve for x
    x = 68,925,336.48/8,125.20
  6. Step 6: Final answer
    x = 8,482.91

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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.