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Finding the Fourth Proportional to 8,427.16, 12,636.84 and 4,918.19

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Solution

The fourth proportional to 8,427.16, 12,636.84 and 4,918.19 is: 7,375.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,427.16 : 12,636.84 = 4,918.19 : x
  2. Step 2: Convert to fraction form
    8,427.16/12,636.84 = 4,918.19/x
  3. Step 3: Cross multiply
    8,427.16x = 12,636.84 × 4,918.19
  4. Step 4: Simplify right side
    8,427.16x = 62,150,380.12
  5. Step 5: Solve for x
    x = 62,150,380.12/8,427.16
  6. Step 6: Final answer
    x = 7,375.01

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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.