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Finding the Fourth Proportional to 8,427.04, 12,640.32 and 3,496.64

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Solution

The fourth proportional to 8,427.04, 12,640.32 and 3,496.64 is: 5,244.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.04 : 12,640.32 = 3,496.64 : x
  2. Step 2: Convert to fraction form
    8,427.04/12,640.32 = 3,496.64/x
  3. Step 3: Cross multiply
    8,427.04x = 12,640.32 × 3,496.64
  4. Step 4: Simplify right side
    8,427.04x = 44,198,585.32
  5. Step 5: Solve for x
    x = 44,198,585.32/8,427.04
  6. Step 6: Final answer
    x = 5,244.85

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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.