Home / 2,601.09-3,901.20-1,139.85

Finding the Fourth Proportional to 2,601.09, 3,901.20 and 1,139.85

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Solution

The fourth proportional to 2,601.09, 3,901.20 and 1,139.85 is: 1,709.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,601.09 : 3,901.20 = 1,139.85 : x
  2. Step 2: Convert to fraction form
    2,601.09/3,901.20 = 1,139.85/x
  3. Step 3: Cross multiply
    2,601.09x = 3,901.20 × 1,139.85
  4. Step 4: Simplify right side
    2,601.09x = 4,446,782.82
  5. Step 5: Solve for x
    x = 4,446,782.82/2,601.09
  6. Step 6: Final answer
    x = 1,709.58

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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.