Home / 5,171.80-7,137.14-2,813.94

Finding the Fourth Proportional to 5,171.80, 7,137.14 and 2,813.94

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Solution

The fourth proportional to 5,171.80, 7,137.14 and 2,813.94 is: 3,883.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.80 : 7,137.14 = 2,813.94 : x
  2. Step 2: Convert to fraction form
    5,171.80/7,137.14 = 2,813.94/x
  3. Step 3: Cross multiply
    5,171.80x = 7,137.14 × 2,813.94
  4. Step 4: Simplify right side
    5,171.80x = 20,083,477.58
  5. Step 5: Solve for x
    x = 20,083,477.58/5,171.80
  6. Step 6: Final answer
    x = 3,883.27

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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.