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Finding the Fourth Proportional to 5,243.57, 7,866.72 and 1,956.69

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Solution

The fourth proportional to 5,243.57, 7,866.72 and 1,956.69 is: 2,935.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243.57 : 7,866.72 = 1,956.69 : x
  2. Step 2: Convert to fraction form
    5,243.57/7,866.72 = 1,956.69/x
  3. Step 3: Cross multiply
    5,243.57x = 7,866.72 × 1,956.69
  4. Step 4: Simplify right side
    5,243.57x = 15,392,707.80
  5. Step 5: Solve for x
    x = 15,392,707.80/5,243.57
  6. Step 6: Final answer
    x = 2,935.54

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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.