Home / 7,451.07-11,221.18-6,786.78

Finding the Fourth Proportional to 7,451.07, 11,221.18 and 6,786.78

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Solution

The fourth proportional to 7,451.07, 11,221.18 and 6,786.78 is: 10,220.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,451.07 : 11,221.18 = 6,786.78 : x
  2. Step 2: Convert to fraction form
    7,451.07/11,221.18 = 6,786.78/x
  3. Step 3: Cross multiply
    7,451.07x = 11,221.18 × 6,786.78
  4. Step 4: Simplify right side
    7,451.07x = 76,155,680.00
  5. Step 5: Solve for x
    x = 76,155,680.00/7,451.07
  6. Step 6: Final answer
    x = 10,220.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.