Home / 3,945.67-5,919.10-1,172.03

Finding the Fourth Proportional to 3,945.67, 5,919.10 and 1,172.03

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Solution

The fourth proportional to 3,945.67, 5,919.10 and 1,172.03 is: 1,758.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,945.67 : 5,919.10 = 1,172.03 : x
  2. Step 2: Convert to fraction form
    3,945.67/5,919.10 = 1,172.03/x
  3. Step 3: Cross multiply
    3,945.67x = 5,919.10 × 1,172.03
  4. Step 4: Simplify right side
    3,945.67x = 6,937,330.25
  5. Step 5: Solve for x
    x = 6,937,330.25/3,945.67
  6. Step 6: Final answer
    x = 1,758.21

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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.