Home / 8,780.06-13,172.26-2,936.72

Finding the Fourth Proportional to 8,780.06, 13,172.26 and 2,936.72

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Solution

The fourth proportional to 8,780.06, 13,172.26 and 2,936.72 is: 4,405.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,780.06 : 13,172.26 = 2,936.72 : x
  2. Step 2: Convert to fraction form
    8,780.06/13,172.26 = 2,936.72/x
  3. Step 3: Cross multiply
    8,780.06x = 13,172.26 × 2,936.72
  4. Step 4: Simplify right side
    8,780.06x = 38,683,239.39
  5. Step 5: Solve for x
    x = 38,683,239.39/8,780.06
  6. Step 6: Final answer
    x = 4,405.81

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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.