Home / 2,788.20-4,185.96-2,175.84

Finding the Fourth Proportional to 2,788.20, 4,185.96 and 2,175.84

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Solution

The fourth proportional to 2,788.20, 4,185.96 and 2,175.84 is: 3,266.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.20 : 4,185.96 = 2,175.84 : x
  2. Step 2: Convert to fraction form
    2,788.20/4,185.96 = 2,175.84/x
  3. Step 3: Cross multiply
    2,788.20x = 4,185.96 × 2,175.84
  4. Step 4: Simplify right side
    2,788.20x = 9,107,979.21
  5. Step 5: Solve for x
    x = 9,107,979.21/2,788.20
  6. Step 6: Final answer
    x = 3,266.62

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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.