Home / 5,171.20-7,136.39-2,813.35

Finding the Fourth Proportional to 5,171.20, 7,136.39 and 2,813.35

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Solution

The fourth proportional to 5,171.20, 7,136.39 and 2,813.35 is: 3,882.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,171.20 : 7,136.39 = 2,813.35 : x
  2. Step 2: Convert to fraction form
    5,171.20/7,136.39 = 2,813.35/x
  3. Step 3: Cross multiply
    5,171.20x = 7,136.39 × 2,813.35
  4. Step 4: Simplify right side
    5,171.20x = 20,077,148.74
  5. Step 5: Solve for x
    x = 20,077,148.74/5,171.20
  6. Step 6: Final answer
    x = 3,882.49

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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.