Home / 3,942.48-5,917.20-1,635.60

Finding the Fourth Proportional to 3,942.48, 5,917.20 and 1,635.60

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Solution

The fourth proportional to 3,942.48, 5,917.20 and 1,635.60 is: 2,454.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,942.48 : 5,917.20 = 1,635.60 : x
  2. Step 2: Convert to fraction form
    3,942.48/5,917.20 = 1,635.60/x
  3. Step 3: Cross multiply
    3,942.48x = 5,917.20 × 1,635.60
  4. Step 4: Simplify right side
    3,942.48x = 9,678,172.32
  5. Step 5: Solve for x
    x = 9,678,172.32/3,942.48
  6. Step 6: Final answer
    x = 2,454.84

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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.