Home / 1,311.14-1,974.51-1,182.62

Finding the Fourth Proportional to 1,311.14, 1,974.51 and 1,182.62

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Solution

The fourth proportional to 1,311.14, 1,974.51 and 1,182.62 is: 1,780.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311.14 : 1,974.51 = 1,182.62 : x
  2. Step 2: Convert to fraction form
    1,311.14/1,974.51 = 1,182.62/x
  3. Step 3: Cross multiply
    1,311.14x = 1,974.51 × 1,182.62
  4. Step 4: Simplify right side
    1,311.14x = 2,335,089.58
  5. Step 5: Solve for x
    x = 2,335,089.58/1,311.14
  6. Step 6: Final answer
    x = 1,780.97

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.