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Finding the Fourth Proportional to 5,369.53, 7,406.53 and 3,879.63

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Solution

The fourth proportional to 5,369.53, 7,406.53 and 3,879.63 is: 5,351.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,369.53 : 7,406.53 = 3,879.63 : x
  2. Step 2: Convert to fraction form
    5,369.53/7,406.53 = 3,879.63/x
  3. Step 3: Cross multiply
    5,369.53x = 7,406.53 × 3,879.63
  4. Step 4: Simplify right side
    5,369.53x = 28,734,576.59
  5. Step 5: Solve for x
    x = 28,734,576.59/5,369.53
  6. Step 6: Final answer
    x = 5,351.42

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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.