Home / 2,666.13-3,999.19-1,105.73

Finding the Fourth Proportional to 2,666.13, 3,999.19 and 1,105.73

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Solution

The fourth proportional to 2,666.13, 3,999.19 and 1,105.73 is: 1,658.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,666.13 : 3,999.19 = 1,105.73 : x
  2. Step 2: Convert to fraction form
    2,666.13/3,999.19 = 1,105.73/x
  3. Step 3: Cross multiply
    2,666.13x = 3,999.19 × 1,105.73
  4. Step 4: Simplify right side
    2,666.13x = 4,422,024.36
  5. Step 5: Solve for x
    x = 4,422,024.36/2,666.13
  6. Step 6: Final answer
    x = 1,658.59

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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.