Home / 2,786.85-4,177.53-1,398.15

Finding the Fourth Proportional to 2,786.85, 4,177.53 and 1,398.15

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Solution

The fourth proportional to 2,786.85, 4,177.53 and 1,398.15 is: 2,095.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,786.85 : 4,177.53 = 1,398.15 : x
  2. Step 2: Convert to fraction form
    2,786.85/4,177.53 = 1,398.15/x
  3. Step 3: Cross multiply
    2,786.85x = 4,177.53 × 1,398.15
  4. Step 4: Simplify right side
    2,786.85x = 5,840,813.57
  5. Step 5: Solve for x
    x = 5,840,813.57/2,786.85
  6. Step 6: Final answer
    x = 2,095.85

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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.