Home / 8,921.09-13,382.30-2,680.61

Finding the Fourth Proportional to 8,921.09, 13,382.30 and 2,680.61

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Solution

The fourth proportional to 8,921.09, 13,382.30 and 2,680.61 is: 4,021.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,921.09 : 13,382.30 = 2,680.61 : x
  2. Step 2: Convert to fraction form
    8,921.09/13,382.30 = 2,680.61/x
  3. Step 3: Cross multiply
    8,921.09x = 13,382.30 × 2,680.61
  4. Step 4: Simplify right side
    8,921.09x = 35,872,666.99
  5. Step 5: Solve for x
    x = 35,872,666.99/8,921.09
  6. Step 6: Final answer
    x = 4,021.11

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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.