Home / 5,177.50-7,144.71-2,939.08

Finding the Fourth Proportional to 5,177.50, 7,144.71 and 2,939.08

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Solution

The fourth proportional to 5,177.50, 7,144.71 and 2,939.08 is: 4,055.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,177.50 : 7,144.71 = 2,939.08 : x
  2. Step 2: Convert to fraction form
    5,177.50/7,144.71 = 2,939.08/x
  3. Step 3: Cross multiply
    5,177.50x = 7,144.71 × 2,939.08
  4. Step 4: Simplify right side
    5,177.50x = 20,998,892.13
  5. Step 5: Solve for x
    x = 20,998,892.13/5,177.50
  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.