Home / 2,639.64-3,958.86-1,178

Finding the Fourth Proportional to 2,639.64, 3,958.86 and 1,178

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Solution

The fourth proportional to 2,639.64, 3,958.86 and 1,178 is: 1,766.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.64 : 3,958.86 = 1,178 : x
  2. Step 2: Convert to fraction form
    2,639.64/3,958.86 = 1,178/x
  3. Step 3: Cross multiply
    2,639.64x = 3,958.86 × 1,178
  4. Step 4: Simplify right side
    2,639.64x = 4,663,537.08
  5. Step 5: Solve for x
    x = 4,663,537.08/2,639.64
  6. Step 6: Final answer
    x = 1,766.73

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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.