Home / 4,878.21-7,311.45-2,799.65

Finding the Fourth Proportional to 4,878.21, 7,311.45 and 2,799.65

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Solution

The fourth proportional to 4,878.21, 7,311.45 and 2,799.65 is: 4,196.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,878.21 : 7,311.45 = 2,799.65 : x
  2. Step 2: Convert to fraction form
    4,878.21/7,311.45 = 2,799.65/x
  3. Step 3: Cross multiply
    4,878.21x = 7,311.45 × 2,799.65
  4. Step 4: Simplify right side
    4,878.21x = 20,469,500.99
  5. Step 5: Solve for x
    x = 20,469,500.99/4,878.21
  6. Step 6: Final answer
    x = 4,196.11

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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.