Home / 7,163.86-10,743.68-2,780.28

Finding the Fourth Proportional to 7,163.86, 10,743.68 and 2,780.28

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Solution

The fourth proportional to 7,163.86, 10,743.68 and 2,780.28 is: 4,169.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,163.86 : 10,743.68 = 2,780.28 : x
  2. Step 2: Convert to fraction form
    7,163.86/10,743.68 = 2,780.28/x
  3. Step 3: Cross multiply
    7,163.86x = 10,743.68 × 2,780.28
  4. Step 4: Simplify right side
    7,163.86x = 29,870,438.63
  5. Step 5: Solve for x
    x = 29,870,438.63/7,163.86
  6. Step 6: Final answer
    x = 4,169.60

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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.