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Finding the Fourth Proportional to 5,176.96, 7,143.99 and 2,819.11

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Solution

The fourth proportional to 5,176.96, 7,143.99 and 2,819.11 is: 3,890.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.96 : 7,143.99 = 2,819.11 : x
  2. Step 2: Convert to fraction form
    5,176.96/7,143.99 = 2,819.11/x
  3. Step 3: Cross multiply
    5,176.96x = 7,143.99 × 2,819.11
  4. Step 4: Simplify right side
    5,176.96x = 20,139,693.65
  5. Step 5: Solve for x
    x = 20,139,693.65/5,176.96
  6. Step 6: Final answer
    x = 3,890.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.