Home / 2,930.40-4,046.40-2,764.80

Finding the Fourth Proportional to 2,930.40, 4,046.40 and 2,764.80

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Solution

The fourth proportional to 2,930.40, 4,046.40 and 2,764.80 is: 3,817.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.40 : 4,046.40 = 2,764.80 : x
  2. Step 2: Convert to fraction form
    2,930.40/4,046.40 = 2,764.80/x
  3. Step 3: Cross multiply
    2,930.40x = 4,046.40 × 2,764.80
  4. Step 4: Simplify right side
    2,930.40x = 11,187,486.72
  5. Step 5: Solve for x
    x = 11,187,486.72/2,930.40
  6. Step 6: Final answer
    x = 3,817.73

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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.