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Finding the Fourth Proportional to 3,157.65, 4,736.48 and 2,979.45

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Solution

The fourth proportional to 3,157.65, 4,736.48 and 2,979.45 is: 4,469.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.65 : 4,736.48 = 2,979.45 : x
  2. Step 2: Convert to fraction form
    3,157.65/4,736.48 = 2,979.45/x
  3. Step 3: Cross multiply
    3,157.65x = 4,736.48 × 2,979.45
  4. Step 4: Simplify right side
    3,157.65x = 14,112,090.44
  5. Step 5: Solve for x
    x = 14,112,090.44/3,157.65
  6. Step 6: Final answer
    x = 4,469.18

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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.