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Finding the Fourth Proportional to 8,263.68, 12,399.39 and 3,880.50

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Solution

The fourth proportional to 8,263.68, 12,399.39 and 3,880.50 is: 5,822.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,263.68 : 12,399.39 = 3,880.50 : x
  2. Step 2: Convert to fraction form
    8,263.68/12,399.39 = 3,880.50/x
  3. Step 3: Cross multiply
    8,263.68x = 12,399.39 × 3,880.50
  4. Step 4: Simplify right side
    8,263.68x = 48,115,832.90
  5. Step 5: Solve for x
    x = 48,115,832.90/8,263.68
  6. Step 6: Final answer
    x = 5,822.57

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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.