Home / 2,104.12-3,157.74-789.08

Finding the Fourth Proportional to 2,104.12, 3,157.74 and 789.08

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Solution

The fourth proportional to 2,104.12, 3,157.74 and 789.08 is: 1,184.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,104.12 : 3,157.74 = 789.08 : x
  2. Step 2: Convert to fraction form
    2,104.12/3,157.74 = 789.08/x
  3. Step 3: Cross multiply
    2,104.12x = 3,157.74 × 789.08
  4. Step 4: Simplify right side
    2,104.12x = 2,491,709.48
  5. Step 5: Solve for x
    x = 2,491,709.48/2,104.12
  6. Step 6: Final answer
    x = 1,184.21

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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.