Home / 7,890.20-11,826.85-3,933.66

Finding the Fourth Proportional to 7,890.20, 11,826.85 and 3,933.66

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Solution

The fourth proportional to 7,890.20, 11,826.85 and 3,933.66 is: 5,896.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.20 : 11,826.85 = 3,933.66 : x
  2. Step 2: Convert to fraction form
    7,890.20/11,826.85 = 3,933.66/x
  3. Step 3: Cross multiply
    7,890.20x = 11,826.85 × 3,933.66
  4. Step 4: Simplify right side
    7,890.20x = 46,522,806.77
  5. Step 5: Solve for x
    x = 46,522,806.77/7,890.20
  6. Step 6: Final answer
    x = 5,896.28

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1.5x scale

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.