Home / 2,190.20-3,287.64-1,216.04

Finding the Fourth Proportional to 2,190.20, 3,287.64 and 1,216.04

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Solution

The fourth proportional to 2,190.20, 3,287.64 and 1,216.04 is: 1,825.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.20 : 3,287.64 = 1,216.04 : x
  2. Step 2: Convert to fraction form
    2,190.20/3,287.64 = 1,216.04/x
  3. Step 3: Cross multiply
    2,190.20x = 3,287.64 × 1,216.04
  4. Step 4: Simplify right side
    2,190.20x = 3,997,901.75
  5. Step 5: Solve for x
    x = 3,997,901.75/2,190.20
  6. Step 6: Final answer
    x = 1,825.36

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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.