Home / 2,261.18-3,390.90-779.97

Finding the Fourth Proportional to 2,261.18, 3,390.90 and 779.97

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Solution

The fourth proportional to 2,261.18, 3,390.90 and 779.97 is: 1,169.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.18 : 3,390.90 = 779.97 : x
  2. Step 2: Convert to fraction form
    2,261.18/3,390.90 = 779.97/x
  3. Step 3: Cross multiply
    2,261.18x = 3,390.90 × 779.97
  4. Step 4: Simplify right side
    2,261.18x = 2,644,800.27
  5. Step 5: Solve for x
    x = 2,644,800.27/2,261.18
  6. Step 6: Final answer
    x = 1,169.66

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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.