Home / 2,611.20-3,601.44-1,782.72

Finding the Fourth Proportional to 2,611.20, 3,601.44 and 1,782.72

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Solution

The fourth proportional to 2,611.20, 3,601.44 and 1,782.72 is: 2,458.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.20 : 3,601.44 = 1,782.72 : x
  2. Step 2: Convert to fraction form
    2,611.20/3,601.44 = 1,782.72/x
  3. Step 3: Cross multiply
    2,611.20x = 3,601.44 × 1,782.72
  4. Step 4: Simplify right side
    2,611.20x = 6,420,359.12
  5. Step 5: Solve for x
    x = 6,420,359.12/2,611.20
  6. Step 6: Final answer
    x = 2,458.78

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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.