Home / 2,234.70-3,083.85-1,290.51

Finding the Fourth Proportional to 2,234.70, 3,083.85 and 1,290.51

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Solution

The fourth proportional to 2,234.70, 3,083.85 and 1,290.51 is: 1,780.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,234.70 : 3,083.85 = 1,290.51 : x
  2. Step 2: Convert to fraction form
    2,234.70/3,083.85 = 1,290.51/x
  3. Step 3: Cross multiply
    2,234.70x = 3,083.85 × 1,290.51
  4. Step 4: Simplify right side
    2,234.70x = 3,979,739.26
  5. Step 5: Solve for x
    x = 3,979,739.26/2,234.70
  6. Step 6: Final answer
    x = 1,780.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.