Home / 2,778.92-4,169.54-1,218.11

Finding the Fourth Proportional to 2,778.92, 4,169.54 and 1,218.11

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Solution

The fourth proportional to 2,778.92, 4,169.54 and 1,218.11 is: 1,827.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,778.92 : 4,169.54 = 1,218.11 : x
  2. Step 2: Convert to fraction form
    2,778.92/4,169.54 = 1,218.11/x
  3. Step 3: Cross multiply
    2,778.92x = 4,169.54 × 1,218.11
  4. Step 4: Simplify right side
    2,778.92x = 5,078,962.70
  5. Step 5: Solve for x
    x = 5,078,962.70/2,778.92
  6. Step 6: Final answer
    x = 1,827.68

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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.