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Finding the Fourth Proportional to 3,157.55, 4,736.32 and 849.05

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Solution

The fourth proportional to 3,157.55, 4,736.32 and 849.05 is: 1,273.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.55 : 4,736.32 = 849.05 : x
  2. Step 2: Convert to fraction form
    3,157.55/4,736.32 = 849.05/x
  3. Step 3: Cross multiply
    3,157.55x = 4,736.32 × 849.05
  4. Step 4: Simplify right side
    3,157.55x = 4,021,346.69
  5. Step 5: Solve for x
    x = 4,021,346.69/3,157.55
  6. Step 6: Final answer
    x = 1,273.57

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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.