Home / 5,136.30-7,081.67-4,286.78

Finding the Fourth Proportional to 5,136.30, 7,081.67 and 4,286.78

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Solution

The fourth proportional to 5,136.30, 7,081.67 and 4,286.78 is: 5,910.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,136.30 : 7,081.67 = 4,286.78 : x
  2. Step 2: Convert to fraction form
    5,136.30/7,081.67 = 4,286.78/x
  3. Step 3: Cross multiply
    5,136.30x = 7,081.67 × 4,286.78
  4. Step 4: Simplify right side
    5,136.30x = 30,357,504.48
  5. Step 5: Solve for x
    x = 30,357,504.48/5,136.30
  6. Step 6: Final answer
    x = 5,910.38

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Half scale
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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.