Home / 5,238.48-7,229.20-2,880.64

Finding the Fourth Proportional to 5,238.48, 7,229.20 and 2,880.64

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Solution

The fourth proportional to 5,238.48, 7,229.20 and 2,880.64 is: 3,975.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,238.48 : 7,229.20 = 2,880.64 : x
  2. Step 2: Convert to fraction form
    5,238.48/7,229.20 = 2,880.64/x
  3. Step 3: Cross multiply
    5,238.48x = 7,229.20 × 2,880.64
  4. Step 4: Simplify right side
    5,238.48x = 20,824,722.69
  5. Step 5: Solve for x
    x = 20,824,722.69/5,238.48
  6. Step 6: Final answer
    x = 3,975.34

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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.