Home / 5,174.50-7,140.09-3,079.78

Finding the Fourth Proportional to 5,174.50, 7,140.09 and 3,079.78

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Solution

The fourth proportional to 5,174.50, 7,140.09 and 3,079.78 is: 4,249.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,174.50 : 7,140.09 = 3,079.78 : x
  2. Step 2: Convert to fraction form
    5,174.50/7,140.09 = 3,079.78/x
  3. Step 3: Cross multiply
    5,174.50x = 7,140.09 × 3,079.78
  4. Step 4: Simplify right side
    5,174.50x = 21,989,906.38
  5. Step 5: Solve for x
    x = 21,989,906.38/5,174.50
  6. Step 6: Final answer
    x = 4,249.67

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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.