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Finding the Fourth Proportional to 6,636.32, 9,938.56 and 3,857.12

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Solution

The fourth proportional to 6,636.32, 9,938.56 and 3,857.12 is: 5,776.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,636.32 : 9,938.56 = 3,857.12 : x
  2. Step 2: Convert to fraction form
    6,636.32/9,938.56 = 3,857.12/x
  3. Step 3: Cross multiply
    6,636.32x = 9,938.56 × 3,857.12
  4. Step 4: Simplify right side
    6,636.32x = 38,334,218.55
  5. Step 5: Solve for x
    x = 38,334,218.55/6,636.32
  6. Step 6: Final answer
    x = 5,776.43

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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.