Home / 2,311.73-3,190-1,263.79

Finding the Fourth Proportional to 2,311.73, 3,190 and 1,263.79

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Solution

The fourth proportional to 2,311.73, 3,190 and 1,263.79 is: 1,743.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,311.73 : 3,190 = 1,263.79 : x
  2. Step 2: Convert to fraction form
    2,311.73/3,190 = 1,263.79/x
  3. Step 3: Cross multiply
    2,311.73x = 3,190 × 1,263.79
  4. Step 4: Simplify right side
    2,311.73x = 4,031,490.10
  5. Step 5: Solve for x
    x = 4,031,490.10/2,311.73
  6. Step 6: Final answer
    x = 1,743.93

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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.