Home / 5,245.83-7,239.25-2,855.79

Finding the Fourth Proportional to 5,245.83, 7,239.25 and 2,855.79

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Solution

The fourth proportional to 5,245.83, 7,239.25 and 2,855.79 is: 3,940.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.83 : 7,239.25 = 2,855.79 : x
  2. Step 2: Convert to fraction form
    5,245.83/7,239.25 = 2,855.79/x
  3. Step 3: Cross multiply
    5,245.83x = 7,239.25 × 2,855.79
  4. Step 4: Simplify right side
    5,245.83x = 20,673,734.42
  5. Step 5: Solve for x
    x = 20,673,734.42/5,245.83
  6. Step 6: Final answer
    x = 3,940.99

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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.