Home / 8,921.21-13,382.50-2,680.73

Finding the Fourth Proportional to 8,921.21, 13,382.50 and 2,680.73

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Solution

The fourth proportional to 8,921.21, 13,382.50 and 2,680.73 is: 4,021.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.21 : 13,382.50 = 2,680.73 : x
  2. Step 2: Convert to fraction form
    8,921.21/13,382.50 = 2,680.73/x
  3. Step 3: Cross multiply
    8,921.21x = 13,382.50 × 2,680.73
  4. Step 4: Simplify right side
    8,921.21x = 35,874,869.23
  5. Step 5: Solve for x
    x = 35,874,869.23/8,921.21
  6. Step 6: Final answer
    x = 4,021.30

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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.