Home / 2,699.39-4,049.63-1,139.38

Finding the Fourth Proportional to 2,699.39, 4,049.63 and 1,139.38

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Solution

The fourth proportional to 2,699.39, 4,049.63 and 1,139.38 is: 1,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,699.39 : 4,049.63 = 1,139.38 : x
  2. Step 2: Convert to fraction form
    2,699.39/4,049.63 = 1,139.38/x
  3. Step 3: Cross multiply
    2,699.39x = 4,049.63 × 1,139.38
  4. Step 4: Simplify right side
    2,699.39x = 4,614,078.66
  5. Step 5: Solve for x
    x = 4,614,078.66/2,699.39
  6. Step 6: Final answer
    x = 1,709.30

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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.