Home / 2,311.48-3,189.86-1,263.61

Finding the Fourth Proportional to 2,311.48, 3,189.86 and 1,263.61

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Solution

The fourth proportional to 2,311.48, 3,189.86 and 1,263.61 is: 1,743.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.48 : 3,189.86 = 1,263.61 : x
  2. Step 2: Convert to fraction form
    2,311.48/3,189.86 = 1,263.61/x
  3. Step 3: Cross multiply
    2,311.48x = 3,189.86 × 1,263.61
  4. Step 4: Simplify right side
    2,311.48x = 4,030,738.99
  5. Step 5: Solve for x
    x = 4,030,738.99/2,311.48
  6. Step 6: Final answer
    x = 1,743.79

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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.