Home / 1,270.12-1,906.26-621.04

Finding the Fourth Proportional to 1,270.12, 1,906.26 and 621.04

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Solution

The fourth proportional to 1,270.12, 1,906.26 and 621.04 is: 932.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270.12 : 1,906.26 = 621.04 : x
  2. Step 2: Convert to fraction form
    1,270.12/1,906.26 = 621.04/x
  3. Step 3: Cross multiply
    1,270.12x = 1,906.26 × 621.04
  4. Step 4: Simplify right side
    1,270.12x = 1,183,863.71
  5. Step 5: Solve for x
    x = 1,183,863.71/1,270.12
  6. Step 6: Final answer
    x = 932.09

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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.