Home / 5,171.14-7,135.96-2,813.28

Finding the Fourth Proportional to 5,171.14, 7,135.96 and 2,813.28

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Solution

The fourth proportional to 5,171.14, 7,135.96 and 2,813.28 is: 3,882.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.14 : 7,135.96 = 2,813.28 : x
  2. Step 2: Convert to fraction form
    5,171.14/7,135.96 = 2,813.28/x
  3. Step 3: Cross multiply
    5,171.14x = 7,135.96 × 2,813.28
  4. Step 4: Simplify right side
    5,171.14x = 20,075,453.55
  5. Step 5: Solve for x
    x = 20,075,453.55/5,171.14
  6. Step 6: Final answer
    x = 3,882.21

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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.