Home / 3,172.09-4,758.05-1,418.71

Finding the Fourth Proportional to 3,172.09, 4,758.05 and 1,418.71

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Solution

The fourth proportional to 3,172.09, 4,758.05 and 1,418.71 is: 2,128.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,172.09 : 4,758.05 = 1,418.71 : x
  2. Step 2: Convert to fraction form
    3,172.09/4,758.05 = 1,418.71/x
  3. Step 3: Cross multiply
    3,172.09x = 4,758.05 × 1,418.71
  4. Step 4: Simplify right side
    3,172.09x = 6,750,286.02
  5. Step 5: Solve for x
    x = 6,750,286.02/3,172.09
  6. Step 6: Final answer
    x = 2,128.02

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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.