Home / 1,331.14-1,993.49-1,135.02

Finding the Fourth Proportional to 1,331.14, 1,993.49 and 1,135.02

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Solution

The fourth proportional to 1,331.14, 1,993.49 and 1,135.02 is: 1,699.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.14 : 1,993.49 = 1,135.02 : x
  2. Step 2: Convert to fraction form
    1,331.14/1,993.49 = 1,135.02/x
  3. Step 3: Cross multiply
    1,331.14x = 1,993.49 × 1,135.02
  4. Step 4: Simplify right side
    1,331.14x = 2,262,649.60
  5. Step 5: Solve for x
    x = 2,262,649.60/1,331.14
  6. Step 6: Final answer
    x = 1,699.78

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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.