Home / 2,190.52-3,284.40-1,217.30

Finding the Fourth Proportional to 2,190.52, 3,284.40 and 1,217.30

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Solution

The fourth proportional to 2,190.52, 3,284.40 and 1,217.30 is: 1,825.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.52 : 3,284.40 = 1,217.30 : x
  2. Step 2: Convert to fraction form
    2,190.52/3,284.40 = 1,217.30/x
  3. Step 3: Cross multiply
    2,190.52x = 3,284.40 × 1,217.30
  4. Step 4: Simplify right side
    2,190.52x = 3,998,100.12
  5. Step 5: Solve for x
    x = 3,998,100.12/2,190.52
  6. Step 6: Final answer
    x = 1,825.18

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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.