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Finding the Fourth Proportional to 5,171.69, 7,137.11 and 2,813.92

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Solution

The fourth proportional to 5,171.69, 7,137.11 and 2,813.92 is: 3,883.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.69 : 7,137.11 = 2,813.92 : x
  2. Step 2: Convert to fraction form
    5,171.69/7,137.11 = 2,813.92/x
  3. Step 3: Cross multiply
    5,171.69x = 7,137.11 × 2,813.92
  4. Step 4: Simplify right side
    5,171.69x = 20,083,256.57
  5. Step 5: Solve for x
    x = 20,083,256.57/5,171.69
  6. Step 6: Final answer
    x = 3,883.31

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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.