Home / 7,676.51-11,517.21-2,742.80

Finding the Fourth Proportional to 7,676.51, 11,517.21 and 2,742.80

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Solution

The fourth proportional to 7,676.51, 11,517.21 and 2,742.80 is: 4,115.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,676.51 : 11,517.21 = 2,742.80 : x
  2. Step 2: Convert to fraction form
    7,676.51/11,517.21 = 2,742.80/x
  3. Step 3: Cross multiply
    7,676.51x = 11,517.21 × 2,742.80
  4. Step 4: Simplify right side
    7,676.51x = 31,589,403.59
  5. Step 5: Solve for x
    x = 31,589,403.59/7,676.51
  6. Step 6: Final answer
    x = 4,115.07

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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.