Home / 8,906.96-12,280.20-6,107.60

Finding the Fourth Proportional to 8,906.96, 12,280.20 and 6,107.60

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Solution

The fourth proportional to 8,906.96, 12,280.20 and 6,107.60 is: 8,420.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.96 : 12,280.20 = 6,107.60 : x
  2. Step 2: Convert to fraction form
    8,906.96/12,280.20 = 6,107.60/x
  3. Step 3: Cross multiply
    8,906.96x = 12,280.20 × 6,107.60
  4. Step 4: Simplify right side
    8,906.96x = 75,002,549.52
  5. Step 5: Solve for x
    x = 75,002,549.52/8,906.96
  6. Step 6: Final answer
    x = 8,420.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.