Home / 7,187.92-10,778.24-3,288.98

Finding the Fourth Proportional to 7,187.92, 10,778.24 and 3,288.98

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Solution

The fourth proportional to 7,187.92, 10,778.24 and 3,288.98 is: 4,931.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187.92 : 10,778.24 = 3,288.98 : x
  2. Step 2: Convert to fraction form
    7,187.92/10,778.24 = 3,288.98/x
  3. Step 3: Cross multiply
    7,187.92x = 10,778.24 × 3,288.98
  4. Step 4: Simplify right side
    7,187.92x = 35,449,426.30
  5. Step 5: Solve for x
    x = 35,449,426.30/7,187.92
  6. Step 6: Final answer
    x = 4,931.81

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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.