Home / 7,137.44-10,707.73-2,139.61

Finding the Fourth Proportional to 7,137.44, 10,707.73 and 2,139.61

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Solution

The fourth proportional to 7,137.44, 10,707.73 and 2,139.61 is: 3,209.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,137.44 : 10,707.73 = 2,139.61 : x
  2. Step 2: Convert to fraction form
    7,137.44/10,707.73 = 2,139.61/x
  3. Step 3: Cross multiply
    7,137.44x = 10,707.73 × 2,139.61
  4. Step 4: Simplify right side
    7,137.44x = 22,910,301.95
  5. Step 5: Solve for x
    x = 22,910,301.95/7,137.44
  6. Step 6: Final answer
    x = 3,209.88

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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.