Home / 8,125.20-12,188.88-3,743.64

Finding the Fourth Proportional to 8,125.20, 12,188.88 and 3,743.64

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Solution

The fourth proportional to 8,125.20, 12,188.88 and 3,743.64 is: 5,615.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.20 : 12,188.88 = 3,743.64 : x
  2. Step 2: Convert to fraction form
    8,125.20/12,188.88 = 3,743.64/x
  3. Step 3: Cross multiply
    8,125.20x = 12,188.88 × 3,743.64
  4. Step 4: Simplify right side
    8,125.20x = 45,630,778.72
  5. Step 5: Solve for x
    x = 45,630,778.72/8,125.20
  6. Step 6: Final answer
    x = 5,615.96

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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.