Home / 1,311.31-1,956.73-1,194.87

Finding the Fourth Proportional to 1,311.31, 1,956.73 and 1,194.87

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Solution

The fourth proportional to 1,311.31, 1,956.73 and 1,194.87 is: 1,782.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311.31 : 1,956.73 = 1,194.87 : x
  2. Step 2: Convert to fraction form
    1,311.31/1,956.73 = 1,194.87/x
  3. Step 3: Cross multiply
    1,311.31x = 1,956.73 × 1,194.87
  4. Step 4: Simplify right side
    1,311.31x = 2,338,037.98
  5. Step 5: Solve for x
    x = 2,338,037.98/1,311.31
  6. Step 6: Final answer
    x = 1,782.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.