Home / 3,021.20-4,167.72-1,778.96

Finding the Fourth Proportional to 3,021.20, 4,167.72 and 1,778.96

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Solution

The fourth proportional to 3,021.20, 4,167.72 and 1,778.96 is: 2,454.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,021.20 : 4,167.72 = 1,778.96 : x
  2. Step 2: Convert to fraction form
    3,021.20/4,167.72 = 1,778.96/x
  3. Step 3: Cross multiply
    3,021.20x = 4,167.72 × 1,778.96
  4. Step 4: Simplify right side
    3,021.20x = 7,414,207.17
  5. Step 5: Solve for x
    x = 7,414,207.17/3,021.20
  6. Step 6: Final answer
    x = 2,454.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.