Home / 3,120.60-4,676.10-2,707.80

Finding the Fourth Proportional to 3,120.60, 4,676.10 and 2,707.80

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Solution

The fourth proportional to 3,120.60, 4,676.10 and 2,707.80 is: 4,057.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.60 : 4,676.10 = 2,707.80 : x
  2. Step 2: Convert to fraction form
    3,120.60/4,676.10 = 2,707.80/x
  3. Step 3: Cross multiply
    3,120.60x = 4,676.10 × 2,707.80
  4. Step 4: Simplify right side
    3,120.60x = 12,661,943.58
  5. Step 5: Solve for x
    x = 12,661,943.58/3,120.60
  6. Step 6: Final answer
    x = 4,057.53

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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.