Home / 8,989.27-12,406.83-6,861.50

Finding the Fourth Proportional to 8,989.27, 12,406.83 and 6,861.50

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Solution

The fourth proportional to 8,989.27, 12,406.83 and 6,861.50 is: 9,470.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.27 : 12,406.83 = 6,861.50 : x
  2. Step 2: Convert to fraction form
    8,989.27/12,406.83 = 6,861.50/x
  3. Step 3: Cross multiply
    8,989.27x = 12,406.83 × 6,861.50
  4. Step 4: Simplify right side
    8,989.27x = 85,129,464.05
  5. Step 5: Solve for x
    x = 85,129,464.05/8,989.27
  6. Step 6: Final answer
    x = 9,470.12

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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.