Home / 2,919.09-4,380.46-1,187.72

Finding the Fourth Proportional to 2,919.09, 4,380.46 and 1,187.72

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Solution

The fourth proportional to 2,919.09, 4,380.46 and 1,187.72 is: 1,782.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.09 : 4,380.46 = 1,187.72 : x
  2. Step 2: Convert to fraction form
    2,919.09/4,380.46 = 1,187.72/x
  3. Step 3: Cross multiply
    2,919.09x = 4,380.46 × 1,187.72
  4. Step 4: Simplify right side
    2,919.09x = 5,202,758.19
  5. Step 5: Solve for x
    x = 5,202,758.19/2,919.09
  6. Step 6: Final answer
    x = 1,782.32

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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.