Home / 5,149.46-7,105.97-2,911.19

Finding the Fourth Proportional to 5,149.46, 7,105.97 and 2,911.19

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Solution

The fourth proportional to 5,149.46, 7,105.97 and 2,911.19 is: 4,017.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,149.46 : 7,105.97 = 2,911.19 : x
  2. Step 2: Convert to fraction form
    5,149.46/7,105.97 = 2,911.19/x
  3. Step 3: Cross multiply
    5,149.46x = 7,105.97 × 2,911.19
  4. Step 4: Simplify right side
    5,149.46x = 20,686,814.25
  5. Step 5: Solve for x
    x = 20,686,814.25/5,149.46
  6. Step 6: Final answer
    x = 4,017.28

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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.