Home / 11,288.85-16,931.45-3,791.70

Finding the Fourth Proportional to 11,288.85, 16,931.45 and 3,791.70

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Solution

The fourth proportional to 11,288.85, 16,931.45 and 3,791.70 is: 5,686.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,288.85 : 16,931.45 = 3,791.70 : x
  2. Step 2: Convert to fraction form
    11,288.85/16,931.45 = 3,791.70/x
  3. Step 3: Cross multiply
    11,288.85x = 16,931.45 × 3,791.70
  4. Step 4: Simplify right side
    11,288.85x = 64,198,960.01
  5. Step 5: Solve for x
    x = 64,198,960.01/11,288.85
  6. Step 6: Final answer
    x = 5,686.94

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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.