Home / 5,408.13-8,112.26-1,945.38

Finding the Fourth Proportional to 5,408.13, 8,112.26 and 1,945.38

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Solution

The fourth proportional to 5,408.13, 8,112.26 and 1,945.38 is: 2,918.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,408.13 : 8,112.26 = 1,945.38 : x
  2. Step 2: Convert to fraction form
    5,408.13/8,112.26 = 1,945.38/x
  3. Step 3: Cross multiply
    5,408.13x = 8,112.26 × 1,945.38
  4. Step 4: Simplify right side
    5,408.13x = 15,781,428.36
  5. Step 5: Solve for x
    x = 15,781,428.36/5,408.13
  6. Step 6: Final answer
    x = 2,918.09

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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.