Home / 5,242.68-7,859.92-3,290.78

Finding the Fourth Proportional to 5,242.68, 7,859.92 and 3,290.78

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Solution

The fourth proportional to 5,242.68, 7,859.92 and 3,290.78 is: 4,933.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,242.68 : 7,859.92 = 3,290.78 : x
  2. Step 2: Convert to fraction form
    5,242.68/7,859.92 = 3,290.78/x
  3. Step 3: Cross multiply
    5,242.68x = 7,859.92 × 3,290.78
  4. Step 4: Simplify right side
    5,242.68x = 25,865,267.54
  5. Step 5: Solve for x
    x = 25,865,267.54/5,242.68
  6. Step 6: Final answer
    x = 4,933.60

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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.