Home / 9,789.05-14,685.20-3,213.78

Finding the Fourth Proportional to 9,789.05, 14,685.20 and 3,213.78

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Solution

The fourth proportional to 9,789.05, 14,685.20 and 3,213.78 is: 4,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,789.05 : 14,685.20 = 3,213.78 : x
  2. Step 2: Convert to fraction form
    9,789.05/14,685.20 = 3,213.78/x
  3. Step 3: Cross multiply
    9,789.05x = 14,685.20 × 3,213.78
  4. Step 4: Simplify right side
    9,789.05x = 47,194,942.97
  5. Step 5: Solve for x
    x = 47,194,942.97/9,789.05
  6. Step 6: Final answer
    x = 4,821.20

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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.