Home / 2,774.20-4,161.30-1,385.47

Finding the Fourth Proportional to 2,774.20, 4,161.30 and 1,385.47

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Solution

The fourth proportional to 2,774.20, 4,161.30 and 1,385.47 is: 2,078.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.20 : 4,161.30 = 1,385.47 : x
  2. Step 2: Convert to fraction form
    2,774.20/4,161.30 = 1,385.47/x
  3. Step 3: Cross multiply
    2,774.20x = 4,161.30 × 1,385.47
  4. Step 4: Simplify right side
    2,774.20x = 5,765,356.31
  5. Step 5: Solve for x
    x = 5,765,356.31/2,774.20
  6. Step 6: Final answer
    x = 2,078.21

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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.