Home / 5,238.60-7,229.21-2,880.69

Finding the Fourth Proportional to 5,238.60, 7,229.21 and 2,880.69

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Solution

The fourth proportional to 5,238.60, 7,229.21 and 2,880.69 is: 3,975.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.60 : 7,229.21 = 2,880.69 : x
  2. Step 2: Convert to fraction form
    5,238.60/7,229.21 = 2,880.69/x
  3. Step 3: Cross multiply
    5,238.60x = 7,229.21 × 2,880.69
  4. Step 4: Simplify right side
    5,238.60x = 20,825,112.95
  5. Step 5: Solve for x
    x = 20,825,112.95/5,238.60
  6. Step 6: Final answer
    x = 3,975.32

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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.