Home / 7,860.43-11,790.49-3,180.39

Finding the Fourth Proportional to 7,860.43, 11,790.49 and 3,180.39

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Solution

The fourth proportional to 7,860.43, 11,790.49 and 3,180.39 is: 4,770.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,860.43 : 11,790.49 = 3,180.39 : x
  2. Step 2: Convert to fraction form
    7,860.43/11,790.49 = 3,180.39/x
  3. Step 3: Cross multiply
    7,860.43x = 11,790.49 × 3,180.39
  4. Step 4: Simplify right side
    7,860.43x = 37,498,356.49
  5. Step 5: Solve for x
    x = 37,498,356.49/7,860.43
  6. Step 6: Final answer
    x = 4,770.52

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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.