Home / 2,747.28-4,118.04-1,186.80

Finding the Fourth Proportional to 2,747.28, 4,118.04 and 1,186.80

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Solution

The fourth proportional to 2,747.28, 4,118.04 and 1,186.80 is: 1,778.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,747.28 : 4,118.04 = 1,186.80 : x
  2. Step 2: Convert to fraction form
    2,747.28/4,118.04 = 1,186.80/x
  3. Step 3: Cross multiply
    2,747.28x = 4,118.04 × 1,186.80
  4. Step 4: Simplify right side
    2,747.28x = 4,887,289.87
  5. Step 5: Solve for x
    x = 4,887,289.87/2,747.28
  6. Step 6: Final answer
    x = 1,778.96

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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.