Home / 6,219.75-9,329.64-2,115.75

Finding the Fourth Proportional to 6,219.75, 9,329.64 and 2,115.75

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Solution

The fourth proportional to 6,219.75, 9,329.64 and 2,115.75 is: 3,173.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,219.75 : 9,329.64 = 2,115.75 : x
  2. Step 2: Convert to fraction form
    6,219.75/9,329.64 = 2,115.75/x
  3. Step 3: Cross multiply
    6,219.75x = 9,329.64 × 2,115.75
  4. Step 4: Simplify right side
    6,219.75x = 19,739,185.83
  5. Step 5: Solve for x
    x = 19,739,185.83/6,219.75
  6. Step 6: Final answer
    x = 3,173.63

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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.