Home / 2,405.44-3,607.20-1,172.80

Finding the Fourth Proportional to 2,405.44, 3,607.20 and 1,172.80

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Solution

The fourth proportional to 2,405.44, 3,607.20 and 1,172.80 is: 1,758.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,405.44 : 3,607.20 = 1,172.80 : x
  2. Step 2: Convert to fraction form
    2,405.44/3,607.20 = 1,172.80/x
  3. Step 3: Cross multiply
    2,405.44x = 3,607.20 × 1,172.80
  4. Step 4: Simplify right side
    2,405.44x = 4,230,524.16
  5. Step 5: Solve for x
    x = 4,230,524.16/2,405.44
  6. Step 6: Final answer
    x = 1,758.73

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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.