Home / 5,177.51-7,144.71-2,939.09

Finding the Fourth Proportional to 5,177.51, 7,144.71 and 2,939.09

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Solution

The fourth proportional to 5,177.51, 7,144.71 and 2,939.09 is: 4,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.51 : 7,144.71 = 2,939.09 : x
  2. Step 2: Convert to fraction form
    5,177.51/7,144.71 = 2,939.09/x
  3. Step 3: Cross multiply
    5,177.51x = 7,144.71 × 2,939.09
  4. Step 4: Simplify right side
    5,177.51x = 20,998,909.99
  5. Step 5: Solve for x
    x = 20,998,909.99/5,177.51
  6. Step 6: Final answer
    x = 4,055.80

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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.