Home / 2,261.03-3,390.70-779.84

Finding the Fourth Proportional to 2,261.03, 3,390.70 and 779.84

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Solution

The fourth proportional to 2,261.03, 3,390.70 and 779.84 is: 1,169.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.03 : 3,390.70 = 779.84 : x
  2. Step 2: Convert to fraction form
    2,261.03/3,390.70 = 779.84/x
  3. Step 3: Cross multiply
    2,261.03x = 3,390.70 × 779.84
  4. Step 4: Simplify right side
    2,261.03x = 2,644,182.64
  5. Step 5: Solve for x
    x = 2,644,182.64/2,261.03
  6. Step 6: Final answer
    x = 1,169.46

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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.