Home / 1,319.14-1,819.09-1,119.74

Finding the Fourth Proportional to 1,319.14, 1,819.09 and 1,119.74

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Solution

The fourth proportional to 1,319.14, 1,819.09 and 1,119.74 is: 1,544.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.14 : 1,819.09 = 1,119.74 : x
  2. Step 2: Convert to fraction form
    1,319.14/1,819.09 = 1,119.74/x
  3. Step 3: Cross multiply
    1,319.14x = 1,819.09 × 1,119.74
  4. Step 4: Simplify right side
    1,319.14x = 2,036,910.37
  5. Step 5: Solve for x
    x = 2,036,910.37/1,319.14
  6. Step 6: Final answer
    x = 1,544.13

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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.