Home / 8,718.60-13,081.40-3,172.33

Finding the Fourth Proportional to 8,718.60, 13,081.40 and 3,172.33

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Solution

The fourth proportional to 8,718.60, 13,081.40 and 3,172.33 is: 4,759.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,718.60 : 13,081.40 = 3,172.33 : x
  2. Step 2: Convert to fraction form
    8,718.60/13,081.40 = 3,172.33/x
  3. Step 3: Cross multiply
    8,718.60x = 13,081.40 × 3,172.33
  4. Step 4: Simplify right side
    8,718.60x = 41,498,530.05
  5. Step 5: Solve for x
    x = 41,498,530.05/8,718.60
  6. Step 6: Final answer
    x = 4,759.77

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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.