Home / 2,809.11-4,213.68-1,078.14

Finding the Fourth Proportional to 2,809.11, 4,213.68 and 1,078.14

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Solution

The fourth proportional to 2,809.11, 4,213.68 and 1,078.14 is: 1,617.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,809.11 : 4,213.68 = 1,078.14 : x
  2. Step 2: Convert to fraction form
    2,809.11/4,213.68 = 1,078.14/x
  3. Step 3: Cross multiply
    2,809.11x = 4,213.68 × 1,078.14
  4. Step 4: Simplify right side
    2,809.11x = 4,542,936.96
  5. Step 5: Solve for x
    x = 4,542,936.96/2,809.11
  6. Step 6: Final answer
    x = 1,617.22

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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.