Home / 8,619.03-12,928.29-2,379.42

Finding the Fourth Proportional to 8,619.03, 12,928.29 and 2,379.42

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Solution

The fourth proportional to 8,619.03, 12,928.29 and 2,379.42 is: 3,569.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.03 : 12,928.29 = 2,379.42 : x
  2. Step 2: Convert to fraction form
    8,619.03/12,928.29 = 2,379.42/x
  3. Step 3: Cross multiply
    8,619.03x = 12,928.29 × 2,379.42
  4. Step 4: Simplify right side
    8,619.03x = 30,761,858.16
  5. Step 5: Solve for x
    x = 30,761,858.16/8,619.03
  6. Step 6: Final answer
    x = 3,569.06

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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.