Home / 2,311.19-3,189.44-1,263.25

Finding the Fourth Proportional to 2,311.19, 3,189.44 and 1,263.25

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Solution

The fourth proportional to 2,311.19, 3,189.44 and 1,263.25 is: 1,743.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.19 : 3,189.44 = 1,263.25 : x
  2. Step 2: Convert to fraction form
    2,311.19/3,189.44 = 1,263.25/x
  3. Step 3: Cross multiply
    2,311.19x = 3,189.44 × 1,263.25
  4. Step 4: Simplify right side
    2,311.19x = 4,029,060.08
  5. Step 5: Solve for x
    x = 4,029,060.08/2,311.19
  6. Step 6: Final answer
    x = 1,743.28

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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.