Home / 5,172.52-7,137.99-2,814.61

Finding the Fourth Proportional to 5,172.52, 7,137.99 and 2,814.61

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Solution

The fourth proportional to 5,172.52, 7,137.99 and 2,814.61 is: 3,884.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.52 : 7,137.99 = 2,814.61 : x
  2. Step 2: Convert to fraction form
    5,172.52/7,137.99 = 2,814.61/x
  3. Step 3: Cross multiply
    5,172.52x = 7,137.99 × 2,814.61
  4. Step 4: Simplify right side
    5,172.52x = 20,090,658.03
  5. Step 5: Solve for x
    x = 20,090,658.03/5,172.52
  6. Step 6: Final answer
    x = 3,884.11

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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.