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Finding the Fourth Proportional to 5,072.78, 7,000.34 and 2,834.69

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Solution

The fourth proportional to 5,072.78, 7,000.34 and 2,834.69 is: 3,911.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,072.78 : 7,000.34 = 2,834.69 : x
  2. Step 2: Convert to fraction form
    5,072.78/7,000.34 = 2,834.69/x
  3. Step 3: Cross multiply
    5,072.78x = 7,000.34 × 2,834.69
  4. Step 4: Simplify right side
    5,072.78x = 19,843,744.62
  5. Step 5: Solve for x
    x = 19,843,744.62/5,072.78
  6. Step 6: Final answer
    x = 3,911.81

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1.5x scale

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.