Home / 7,191.20-10,788.15-2,808.38

Finding the Fourth Proportional to 7,191.20, 10,788.15 and 2,808.38

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Solution

The fourth proportional to 7,191.20, 10,788.15 and 2,808.38 is: 4,213.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.20 : 10,788.15 = 2,808.38 : x
  2. Step 2: Convert to fraction form
    7,191.20/10,788.15 = 2,808.38/x
  3. Step 3: Cross multiply
    7,191.20x = 10,788.15 × 2,808.38
  4. Step 4: Simplify right side
    7,191.20x = 30,297,170.76
  5. Step 5: Solve for x
    x = 30,297,170.76/7,191.20
  6. Step 6: Final answer
    x = 4,213.09

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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.