Home / 2,261.13-3,389.87-961.70

Finding the Fourth Proportional to 2,261.13, 3,389.87 and 961.70

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Solution

The fourth proportional to 2,261.13, 3,389.87 and 961.70 is: 1,441.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.13 : 3,389.87 = 961.70 : x
  2. Step 2: Convert to fraction form
    2,261.13/3,389.87 = 961.70/x
  3. Step 3: Cross multiply
    2,261.13x = 3,389.87 × 961.70
  4. Step 4: Simplify right side
    2,261.13x = 3,260,016.22
  5. Step 5: Solve for x
    x = 3,260,016.22/2,261.13
  6. Step 6: Final answer
    x = 1,441.76

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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.