Home / 7,628.40-11,414.79-6,299.80

Finding the Fourth Proportional to 7,628.40, 11,414.79 and 6,299.80

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Solution

The fourth proportional to 7,628.40, 11,414.79 and 6,299.80 is: 9,426.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,628.40 : 11,414.79 = 6,299.80 : x
  2. Step 2: Convert to fraction form
    7,628.40/11,414.79 = 6,299.80/x
  3. Step 3: Cross multiply
    7,628.40x = 11,414.79 × 6,299.80
  4. Step 4: Simplify right side
    7,628.40x = 71,910,865.51
  5. Step 5: Solve for x
    x = 71,910,865.51/7,628.40
  6. Step 6: Final answer
    x = 9,426.73

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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.