Home / 5,171.35-7,136.63-2,813.57

Finding the Fourth Proportional to 5,171.35, 7,136.63 and 2,813.57

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Solution

The fourth proportional to 5,171.35, 7,136.63 and 2,813.57 is: 3,882.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.35 : 7,136.63 = 2,813.57 : x
  2. Step 2: Convert to fraction form
    5,171.35/7,136.63 = 2,813.57/x
  3. Step 3: Cross multiply
    5,171.35x = 7,136.63 × 2,813.57
  4. Step 4: Simplify right side
    5,171.35x = 20,079,408.07
  5. Step 5: Solve for x
    x = 20,079,408.07/5,171.35
  6. Step 6: Final answer
    x = 3,882.82

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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.