Home / 2,774.20-4,161.30-2,045.20

Finding the Fourth Proportional to 2,774.20, 4,161.30 and 2,045.20

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Solution

The fourth proportional to 2,774.20, 4,161.30 and 2,045.20 is: 3,067.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,774.20 : 4,161.30 = 2,045.20 : x
  2. Step 2: Convert to fraction form
    2,774.20/4,161.30 = 2,045.20/x
  3. Step 3: Cross multiply
    2,774.20x = 4,161.30 × 2,045.20
  4. Step 4: Simplify right side
    2,774.20x = 8,510,690.76
  5. Step 5: Solve for x
    x = 8,510,690.76/2,774.20
  6. Step 6: Final answer
    x = 3,067.80

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1.5x scale

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.