Home / 3,120.67-4,680.90-1,271.23

Finding the Fourth Proportional to 3,120.67, 4,680.90 and 1,271.23

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Solution

The fourth proportional to 3,120.67, 4,680.90 and 1,271.23 is: 1,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.67 : 4,680.90 = 1,271.23 : x
  2. Step 2: Convert to fraction form
    3,120.67/4,680.90 = 1,271.23/x
  3. Step 3: Cross multiply
    3,120.67x = 4,680.90 × 1,271.23
  4. Step 4: Simplify right side
    3,120.67x = 5,950,500.51
  5. Step 5: Solve for x
    x = 5,950,500.51/3,120.67
  6. Step 6: Final answer
    x = 1,906.80

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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.