Home / 2,639.85-3,959.88-1,179.02

Finding the Fourth Proportional to 2,639.85, 3,959.88 and 1,179.02

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Solution

The fourth proportional to 2,639.85, 3,959.88 and 1,179.02 is: 1,768.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.85 : 3,959.88 = 1,179.02 : x
  2. Step 2: Convert to fraction form
    2,639.85/3,959.88 = 1,179.02/x
  3. Step 3: Cross multiply
    2,639.85x = 3,959.88 × 1,179.02
  4. Step 4: Simplify right side
    2,639.85x = 4,668,767.82
  5. Step 5: Solve for x
    x = 4,668,767.82/2,639.85
  6. Step 6: Final answer
    x = 1,768.57

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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.