Home / 4,780.80-7,161.12-2,185.92

Finding the Fourth Proportional to 4,780.80, 7,161.12 and 2,185.92

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Solution

The fourth proportional to 4,780.80, 7,161.12 and 2,185.92 is: 3,274.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.80 : 7,161.12 = 2,185.92 : x
  2. Step 2: Convert to fraction form
    4,780.80/7,161.12 = 2,185.92/x
  3. Step 3: Cross multiply
    4,780.80x = 7,161.12 × 2,185.92
  4. Step 4: Simplify right side
    4,780.80x = 15,653,635.43
  5. Step 5: Solve for x
    x = 15,653,635.43/4,780.80
  6. Step 6: Final answer
    x = 3,274.27

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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.