Home / 5,171.46-7,136.60-2,813.59

Finding the Fourth Proportional to 5,171.46, 7,136.60 and 2,813.59

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Solution

The fourth proportional to 5,171.46, 7,136.60 and 2,813.59 is: 3,882.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.46 : 7,136.60 = 2,813.59 : x
  2. Step 2: Convert to fraction form
    5,171.46/7,136.60 = 2,813.59/x
  3. Step 3: Cross multiply
    5,171.46x = 7,136.60 × 2,813.59
  4. Step 4: Simplify right side
    5,171.46x = 20,079,466.39
  5. Step 5: Solve for x
    x = 20,079,466.39/5,171.46
  6. Step 6: Final answer
    x = 3,882.75

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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.