Home / 2,021.66-2,789.86-1,125.44

Finding the Fourth Proportional to 2,021.66, 2,789.86 and 1,125.44

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Solution

The fourth proportional to 2,021.66, 2,789.86 and 1,125.44 is: 1,553.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,021.66 : 2,789.86 = 1,125.44 : x
  2. Step 2: Convert to fraction form
    2,021.66/2,789.86 = 1,125.44/x
  3. Step 3: Cross multiply
    2,021.66x = 2,789.86 × 1,125.44
  4. Step 4: Simplify right side
    2,021.66x = 3,139,820.04
  5. Step 5: Solve for x
    x = 3,139,820.04/2,021.66
  6. Step 6: Final answer
    x = 1,553.09

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1.5x scale

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.