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Finding the Fourth Proportional to 3,157.98, 4,736.19 and 1,309.61

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Solution

The fourth proportional to 3,157.98, 4,736.19 and 1,309.61 is: 1,964.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,157.98 : 4,736.19 = 1,309.61 : x
  2. Step 2: Convert to fraction form
    3,157.98/4,736.19 = 1,309.61/x
  3. Step 3: Cross multiply
    3,157.98x = 4,736.19 × 1,309.61
  4. Step 4: Simplify right side
    3,157.98x = 6,202,561.79
  5. Step 5: Solve for x
    x = 6,202,561.79/3,157.98
  6. Step 6: Final answer
    x = 1,964.09

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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.