Home / 8,541.20-12,811.80-8,486.60

Finding the Fourth Proportional to 8,541.20, 12,811.80 and 8,486.60

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Solution

The fourth proportional to 8,541.20, 12,811.80 and 8,486.60 is: 12,729.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,541.20 : 12,811.80 = 8,486.60 : x
  2. Step 2: Convert to fraction form
    8,541.20/12,811.80 = 8,486.60/x
  3. Step 3: Cross multiply
    8,541.20x = 12,811.80 × 8,486.60
  4. Step 4: Simplify right side
    8,541.20x = 108,728,621.88
  5. Step 5: Solve for x
    x = 108,728,621.88/8,541.20
  6. Step 6: Final answer
    x = 12,729.90

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Similar ratio
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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.