Home / 5,217.78-7,200.49-2,859.92

Finding the Fourth Proportional to 5,217.78, 7,200.49 and 2,859.92

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Solution

The fourth proportional to 5,217.78, 7,200.49 and 2,859.92 is: 3,946.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,217.78 : 7,200.49 = 2,859.92 : x
  2. Step 2: Convert to fraction form
    5,217.78/7,200.49 = 2,859.92/x
  3. Step 3: Cross multiply
    5,217.78x = 7,200.49 × 2,859.92
  4. Step 4: Simplify right side
    5,217.78x = 20,592,825.36
  5. Step 5: Solve for x
    x = 20,592,825.36/5,217.78
  6. Step 6: Final answer
    x = 3,946.66

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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.