Home / 2,608.77-3,911.90-1,220.94

Finding the Fourth Proportional to 2,608.77, 3,911.90 and 1,220.94

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Solution

The fourth proportional to 2,608.77, 3,911.90 and 1,220.94 is: 1,830.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,608.77 : 3,911.90 = 1,220.94 : x
  2. Step 2: Convert to fraction form
    2,608.77/3,911.90 = 1,220.94/x
  3. Step 3: Cross multiply
    2,608.77x = 3,911.90 × 1,220.94
  4. Step 4: Simplify right side
    2,608.77x = 4,776,198.24
  5. Step 5: Solve for x
    x = 4,776,198.24/2,608.77
  6. Step 6: Final answer
    x = 1,830.82

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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.