Home / 2,757.13-4,135.82-809.34

Finding the Fourth Proportional to 2,757.13, 4,135.82 and 809.34

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Solution

The fourth proportional to 2,757.13, 4,135.82 and 809.34 is: 1,214.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.13 : 4,135.82 = 809.34 : x
  2. Step 2: Convert to fraction form
    2,757.13/4,135.82 = 809.34/x
  3. Step 3: Cross multiply
    2,757.13x = 4,135.82 × 809.34
  4. Step 4: Simplify right side
    2,757.13x = 3,347,284.56
  5. Step 5: Solve for x
    x = 3,347,284.56/2,757.13
  6. Step 6: Final answer
    x = 1,214.05

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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.