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Finding the Fourth Proportional to 3,157.74, 4,736.42 and 966.28

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Solution

The fourth proportional to 3,157.74, 4,736.42 and 966.28 is: 1,449.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.74 : 4,736.42 = 966.28 : x
  2. Step 2: Convert to fraction form
    3,157.74/4,736.42 = 966.28/x
  3. Step 3: Cross multiply
    3,157.74x = 4,736.42 × 966.28
  4. Step 4: Simplify right side
    3,157.74x = 4,576,707.92
  5. Step 5: Solve for x
    x = 4,576,707.92/3,157.74
  6. Step 6: Final answer
    x = 1,449.36

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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.