Home / 7,990.13-11,027.20-4,632.78

Finding the Fourth Proportional to 7,990.13, 11,027.20 and 4,632.78

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Solution

The fourth proportional to 7,990.13, 11,027.20 and 4,632.78 is: 6,393.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,990.13 : 11,027.20 = 4,632.78 : x
  2. Step 2: Convert to fraction form
    7,990.13/11,027.20 = 4,632.78/x
  3. Step 3: Cross multiply
    7,990.13x = 11,027.20 × 4,632.78
  4. Step 4: Simplify right side
    7,990.13x = 51,086,591.62
  5. Step 5: Solve for x
    x = 51,086,591.62/7,990.13
  6. Step 6: Final answer
    x = 6,393.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.