Home / 1,996.40-2,992.05-1,118.90

Finding the Fourth Proportional to 1,996.40, 2,992.05 and 1,118.90

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Solution

The fourth proportional to 1,996.40, 2,992.05 and 1,118.90 is: 1,676.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,996.40 : 2,992.05 = 1,118.90 : x
  2. Step 2: Convert to fraction form
    1,996.40/2,992.05 = 1,118.90/x
  3. Step 3: Cross multiply
    1,996.40x = 2,992.05 × 1,118.90
  4. Step 4: Simplify right side
    1,996.40x = 3,347,804.75
  5. Step 5: Solve for x
    x = 3,347,804.75/1,996.40
  6. Step 6: Final answer
    x = 1,676.92

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1.5x scale

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.