Home / 1,419.20-1,960.36-1,183.91

Finding the Fourth Proportional to 1,419.20, 1,960.36 and 1,183.91

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Solution

The fourth proportional to 1,419.20, 1,960.36 and 1,183.91 is: 1,635.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419.20 : 1,960.36 = 1,183.91 : x
  2. Step 2: Convert to fraction form
    1,419.20/1,960.36 = 1,183.91/x
  3. Step 3: Cross multiply
    1,419.20x = 1,960.36 × 1,183.91
  4. Step 4: Simplify right side
    1,419.20x = 2,320,889.81
  5. Step 5: Solve for x
    x = 2,320,889.81/1,419.20
  6. Step 6: Final answer
    x = 1,635.35

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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.