Home / 7,191.38-10,788.44-2,808.56

Finding the Fourth Proportional to 7,191.38, 10,788.44 and 2,808.56

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Solution

The fourth proportional to 7,191.38, 10,788.44 and 2,808.56 is: 4,213.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.38 : 10,788.44 = 2,808.56 : x
  2. Step 2: Convert to fraction form
    7,191.38/10,788.44 = 2,808.56/x
  3. Step 3: Cross multiply
    7,191.38x = 10,788.44 × 2,808.56
  4. Step 4: Simplify right side
    7,191.38x = 30,299,993.97
  5. Step 5: Solve for x
    x = 30,299,993.97/7,191.38
  6. Step 6: Final answer
    x = 4,213.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.