Home / 1,490.20-2,234.97-945.88

Finding the Fourth Proportional to 1,490.20, 2,234.97 and 945.88

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Solution

The fourth proportional to 1,490.20, 2,234.97 and 945.88 is: 1,418.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.20 : 2,234.97 = 945.88 : x
  2. Step 2: Convert to fraction form
    1,490.20/2,234.97 = 945.88/x
  3. Step 3: Cross multiply
    1,490.20x = 2,234.97 × 945.88
  4. Step 4: Simplify right side
    1,490.20x = 2,114,013.42
  5. Step 5: Solve for x
    x = 2,114,013.42/1,490.20
  6. Step 6: Final answer
    x = 1,418.61

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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.