Home / 7,781.13-11,676.69-3,100.41

Finding the Fourth Proportional to 7,781.13, 11,676.69 and 3,100.41

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Solution

The fourth proportional to 7,781.13, 11,676.69 and 3,100.41 is: 4,652.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,781.13 : 11,676.69 = 3,100.41 : x
  2. Step 2: Convert to fraction form
    7,781.13/11,676.69 = 3,100.41/x
  3. Step 3: Cross multiply
    7,781.13x = 11,676.69 × 3,100.41
  4. Step 4: Simplify right side
    7,781.13x = 36,202,526.44
  5. Step 5: Solve for x
    x = 36,202,526.44/7,781.13
  6. Step 6: Final answer
    x = 4,652.61

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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.