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Finding the Fourth Proportional to 3,980.70, 5,956.04 and 3,576.50

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Solution

The fourth proportional to 3,980.70, 5,956.04 and 3,576.50 is: 5,351.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.70 : 5,956.04 = 3,576.50 : x
  2. Step 2: Convert to fraction form
    3,980.70/5,956.04 = 3,576.50/x
  3. Step 3: Cross multiply
    3,980.70x = 5,956.04 × 3,576.50
  4. Step 4: Simplify right side
    3,980.70x = 21,301,777.06
  5. Step 5: Solve for x
    x = 21,301,777.06/3,980.70
  6. Step 6: Final answer
    x = 5,351.26

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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.