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Finding the Fourth Proportional to 5,321.23, 7,979.11 and 2,397.94

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Solution

The fourth proportional to 5,321.23, 7,979.11 and 2,397.94 is: 3,595.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,321.23 : 7,979.11 = 2,397.94 : x
  2. Step 2: Convert to fraction form
    5,321.23/7,979.11 = 2,397.94/x
  3. Step 3: Cross multiply
    5,321.23x = 7,979.11 × 2,397.94
  4. Step 4: Simplify right side
    5,321.23x = 19,133,401.09
  5. Step 5: Solve for x
    x = 19,133,401.09/5,321.23
  6. Step 6: Final answer
    x = 3,595.67

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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.