Home / 5,449.71-8,172.72-1,939.56

Finding the Fourth Proportional to 5,449.71, 8,172.72 and 1,939.56

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Solution

The fourth proportional to 5,449.71, 8,172.72 and 1,939.56 is: 2,908.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,449.71 : 8,172.72 = 1,939.56 : x
  2. Step 2: Convert to fraction form
    5,449.71/8,172.72 = 1,939.56/x
  3. Step 3: Cross multiply
    5,449.71x = 8,172.72 × 1,939.56
  4. Step 4: Simplify right side
    5,449.71x = 15,851,480.80
  5. Step 5: Solve for x
    x = 15,851,480.80/5,449.71
  6. Step 6: Final answer
    x = 2,908.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.