Home / 1,318.37-1,817.64-1,081.44

Finding the Fourth Proportional to 1,318.37, 1,817.64 and 1,081.44

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Solution

The fourth proportional to 1,318.37, 1,817.64 and 1,081.44 is: 1,490.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318.37 : 1,817.64 = 1,081.44 : x
  2. Step 2: Convert to fraction form
    1,318.37/1,817.64 = 1,081.44/x
  3. Step 3: Cross multiply
    1,318.37x = 1,817.64 × 1,081.44
  4. Step 4: Simplify right side
    1,318.37x = 1,965,668.60
  5. Step 5: Solve for x
    x = 1,965,668.60/1,318.37
  6. Step 6: Final answer
    x = 1,490.99

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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.