Home / 5,171.40-7,136.54-2,813.54

Finding the Fourth Proportional to 5,171.40, 7,136.54 and 2,813.54

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Solution

The fourth proportional to 5,171.40, 7,136.54 and 2,813.54 is: 3,882.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.40 : 7,136.54 = 2,813.54 : x
  2. Step 2: Convert to fraction form
    5,171.40/7,136.54 = 2,813.54/x
  3. Step 3: Cross multiply
    5,171.40x = 7,136.54 × 2,813.54
  4. Step 4: Simplify right side
    5,171.40x = 20,078,940.75
  5. Step 5: Solve for x
    x = 20,078,940.75/5,171.40
  6. Step 6: Final answer
    x = 3,882.69

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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.