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Finding the Fourth Proportional to 3,157.44, 4,736.16 and 849.12

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Solution

The fourth proportional to 3,157.44, 4,736.16 and 849.12 is: 1,273.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.44 : 4,736.16 = 849.12 : x
  2. Step 2: Convert to fraction form
    3,157.44/4,736.16 = 849.12/x
  3. Step 3: Cross multiply
    3,157.44x = 4,736.16 × 849.12
  4. Step 4: Simplify right side
    3,157.44x = 4,021,568.18
  5. Step 5: Solve for x
    x = 4,021,568.18/3,157.44
  6. Step 6: Final answer
    x = 1,273.68

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Similar ratio
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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.