Home / 1,231.49-1,845.41-1,140.36

Finding the Fourth Proportional to 1,231.49, 1,845.41 and 1,140.36

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Solution

The fourth proportional to 1,231.49, 1,845.41 and 1,140.36 is: 1,708.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.49 : 1,845.41 = 1,140.36 : x
  2. Step 2: Convert to fraction form
    1,231.49/1,845.41 = 1,140.36/x
  3. Step 3: Cross multiply
    1,231.49x = 1,845.41 × 1,140.36
  4. Step 4: Simplify right side
    1,231.49x = 2,104,426.05
  5. Step 5: Solve for x
    x = 2,104,426.05/1,231.49
  6. Step 6: Final answer
    x = 1,708.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.