Home / 2,660.93-3,987.89-1,179.64

Finding the Fourth Proportional to 2,660.93, 3,987.89 and 1,179.64

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Solution

The fourth proportional to 2,660.93, 3,987.89 and 1,179.64 is: 1,767.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.93 : 3,987.89 = 1,179.64 : x
  2. Step 2: Convert to fraction form
    2,660.93/3,987.89 = 1,179.64/x
  3. Step 3: Cross multiply
    2,660.93x = 3,987.89 × 1,179.64
  4. Step 4: Simplify right side
    2,660.93x = 4,704,274.56
  5. Step 5: Solve for x
    x = 4,704,274.56/2,660.93
  6. Step 6: Final answer
    x = 1,767.91

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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.