Home / 1,490.22-2,231.66-1,228.62

Finding the Fourth Proportional to 1,490.22, 2,231.66 and 1,228.62

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Solution

The fourth proportional to 1,490.22, 2,231.66 and 1,228.62 is: 1,839.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.22 : 2,231.66 = 1,228.62 : x
  2. Step 2: Convert to fraction form
    1,490.22/2,231.66 = 1,228.62/x
  3. Step 3: Cross multiply
    1,490.22x = 2,231.66 × 1,228.62
  4. Step 4: Simplify right side
    1,490.22x = 2,741,862.11
  5. Step 5: Solve for x
    x = 2,741,862.11/1,490.22
  6. Step 6: Final answer
    x = 1,839.90

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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.