Home / 8,676.09-13,009.68-3,128.04

Finding the Fourth Proportional to 8,676.09, 13,009.68 and 3,128.04

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Solution

The fourth proportional to 8,676.09, 13,009.68 and 3,128.04 is: 4,690.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,676.09 : 13,009.68 = 3,128.04 : x
  2. Step 2: Convert to fraction form
    8,676.09/13,009.68 = 3,128.04/x
  3. Step 3: Cross multiply
    8,676.09x = 13,009.68 × 3,128.04
  4. Step 4: Simplify right side
    8,676.09x = 40,694,799.43
  5. Step 5: Solve for x
    x = 40,694,799.43/8,676.09
  6. Step 6: Final answer
    x = 4,690.45

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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.