Home / 2,753.20-4,129.80-2,618.80

Finding the Fourth Proportional to 2,753.20, 4,129.80 and 2,618.80

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Solution

The fourth proportional to 2,753.20, 4,129.80 and 2,618.80 is: 3,928.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.20 : 4,129.80 = 2,618.80 : x
  2. Step 2: Convert to fraction form
    2,753.20/4,129.80 = 2,618.80/x
  3. Step 3: Cross multiply
    2,753.20x = 4,129.80 × 2,618.80
  4. Step 4: Simplify right side
    2,753.20x = 10,815,120.24
  5. Step 5: Solve for x
    x = 10,815,120.24/2,753.20
  6. Step 6: Final answer
    x = 3,928.20

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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.