Home / 2,722.45-4,077.60-2,102.80

Finding the Fourth Proportional to 2,722.45, 4,077.60 and 2,102.80

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Solution

The fourth proportional to 2,722.45, 4,077.60 and 2,102.80 is: 3,149.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.45 : 4,077.60 = 2,102.80 : x
  2. Step 2: Convert to fraction form
    2,722.45/4,077.60 = 2,102.80/x
  3. Step 3: Cross multiply
    2,722.45x = 4,077.60 × 2,102.80
  4. Step 4: Simplify right side
    2,722.45x = 8,574,377.28
  5. Step 5: Solve for x
    x = 8,574,377.28/2,722.45
  6. Step 6: Final answer
    x = 3,149.51

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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.