Home / 5,273.78-7,911.93-2,808.09

Finding the Fourth Proportional to 5,273.78, 7,911.93 and 2,808.09

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Solution

The fourth proportional to 5,273.78, 7,911.93 and 2,808.09 is: 4,212.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,273.78 : 7,911.93 = 2,808.09 : x
  2. Step 2: Convert to fraction form
    5,273.78/7,911.93 = 2,808.09/x
  3. Step 3: Cross multiply
    5,273.78x = 7,911.93 × 2,808.09
  4. Step 4: Simplify right side
    5,273.78x = 22,217,428.50
  5. Step 5: Solve for x
    x = 22,217,428.50/5,273.78
  6. Step 6: Final answer
    x = 4,212.81

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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.