Home / 3,126.96-4,687.68-1,177.80

Finding the Fourth Proportional to 3,126.96, 4,687.68 and 1,177.80

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Solution

The fourth proportional to 3,126.96, 4,687.68 and 1,177.80 is: 1,765.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.96 : 4,687.68 = 1,177.80 : x
  2. Step 2: Convert to fraction form
    3,126.96/4,687.68 = 1,177.80/x
  3. Step 3: Cross multiply
    3,126.96x = 4,687.68 × 1,177.80
  4. Step 4: Simplify right side
    3,126.96x = 5,521,149.50
  5. Step 5: Solve for x
    x = 5,521,149.50/3,126.96
  6. Step 6: Final answer
    x = 1,765.66

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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.