Home / 7,780.82-11,665.35-4,028.56

Finding the Fourth Proportional to 7,780.82, 11,665.35 and 4,028.56

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Solution

The fourth proportional to 7,780.82, 11,665.35 and 4,028.56 is: 6,039.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.82 : 11,665.35 = 4,028.56 : x
  2. Step 2: Convert to fraction form
    7,780.82/11,665.35 = 4,028.56/x
  3. Step 3: Cross multiply
    7,780.82x = 11,665.35 × 4,028.56
  4. Step 4: Simplify right side
    7,780.82x = 46,994,533.23
  5. Step 5: Solve for x
    x = 46,994,533.23/7,780.82
  6. Step 6: Final answer
    x = 6,039.80

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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.