Home / 8,619.26-12,929.52-2,780.06

Finding the Fourth Proportional to 8,619.26, 12,929.52 and 2,780.06

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Solution

The fourth proportional to 8,619.26, 12,929.52 and 2,780.06 is: 4,170.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.26 : 12,929.52 = 2,780.06 : x
  2. Step 2: Convert to fraction form
    8,619.26/12,929.52 = 2,780.06/x
  3. Step 3: Cross multiply
    8,619.26x = 12,929.52 × 2,780.06
  4. Step 4: Simplify right side
    8,619.26x = 35,944,841.37
  5. Step 5: Solve for x
    x = 35,944,841.37/8,619.26
  6. Step 6: Final answer
    x = 4,170.29

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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.