Home / 7,191.21-10,786.88-2,511.21

Finding the Fourth Proportional to 7,191.21, 10,786.88 and 2,511.21

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Solution

The fourth proportional to 7,191.21, 10,786.88 and 2,511.21 is: 3,766.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,191.21 : 10,786.88 = 2,511.21 : x
  2. Step 2: Convert to fraction form
    7,191.21/10,786.88 = 2,511.21/x
  3. Step 3: Cross multiply
    7,191.21x = 10,786.88 × 2,511.21
  4. Step 4: Simplify right side
    7,191.21x = 27,088,127.20
  5. Step 5: Solve for x
    x = 27,088,127.20/7,191.21
  6. Step 6: Final answer
    x = 3,766.84

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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.