Home / 5,172.40-7,137.70-2,934.75

Finding the Fourth Proportional to 5,172.40, 7,137.70 and 2,934.75

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Solution

The fourth proportional to 5,172.40, 7,137.70 and 2,934.75 is: 4,049.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.40 : 7,137.70 = 2,934.75 : x
  2. Step 2: Convert to fraction form
    5,172.40/7,137.70 = 2,934.75/x
  3. Step 3: Cross multiply
    5,172.40x = 7,137.70 × 2,934.75
  4. Step 4: Simplify right side
    5,172.40x = 20,947,365.08
  5. Step 5: Solve for x
    x = 20,947,365.08/5,172.40
  6. Step 6: Final answer
    x = 4,049.83

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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.