Home / 2,639.11-3,958.67-1,177.87

Finding the Fourth Proportional to 2,639.11, 3,958.67 and 1,177.87

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Solution

The fourth proportional to 2,639.11, 3,958.67 and 1,177.87 is: 1,766.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.11 : 3,958.67 = 1,177.87 : x
  2. Step 2: Convert to fraction form
    2,639.11/3,958.67 = 1,177.87/x
  3. Step 3: Cross multiply
    2,639.11x = 3,958.67 × 1,177.87
  4. Step 4: Simplify right side
    2,639.11x = 4,662,798.63
  5. Step 5: Solve for x
    x = 4,662,798.63/2,639.11
  6. Step 6: Final answer
    x = 1,766.81

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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.