Home / 5,169.09-7,131.74-2,930.79

Finding the Fourth Proportional to 5,169.09, 7,131.74 and 2,930.79

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Solution

The fourth proportional to 5,169.09, 7,131.74 and 2,930.79 is: 4,043.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.09 : 7,131.74 = 2,930.79 : x
  2. Step 2: Convert to fraction form
    5,169.09/7,131.74 = 2,930.79/x
  3. Step 3: Cross multiply
    5,169.09x = 7,131.74 × 2,930.79
  4. Step 4: Simplify right side
    5,169.09x = 20,901,617.62
  5. Step 5: Solve for x
    x = 20,901,617.62/5,169.09
  6. Step 6: Final answer
    x = 4,043.58

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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.