Home / 8,114.09-12,168.71-2,918.75

Finding the Fourth Proportional to 8,114.09, 12,168.71 and 2,918.75

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Solution

The fourth proportional to 8,114.09, 12,168.71 and 2,918.75 is: 4,377.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,114.09 : 12,168.71 = 2,918.75 : x
  2. Step 2: Convert to fraction form
    8,114.09/12,168.71 = 2,918.75/x
  3. Step 3: Cross multiply
    8,114.09x = 12,168.71 × 2,918.75
  4. Step 4: Simplify right side
    8,114.09x = 35,517,407.72
  5. Step 5: Solve for x
    x = 35,517,407.72/8,114.09
  6. Step 6: Final answer
    x = 4,377.25

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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.