Home / 6,115.78-9,181.87-3,621.57

Finding the Fourth Proportional to 6,115.78, 9,181.87 and 3,621.57

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Solution

The fourth proportional to 6,115.78, 9,181.87 and 3,621.57 is: 5,437.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,115.78 : 9,181.87 = 3,621.57 : x
  2. Step 2: Convert to fraction form
    6,115.78/9,181.87 = 3,621.57/x
  3. Step 3: Cross multiply
    6,115.78x = 9,181.87 × 3,621.57
  4. Step 4: Simplify right side
    6,115.78x = 33,252,811.10
  5. Step 5: Solve for x
    x = 33,252,811.10/6,115.78
  6. Step 6: Final answer
    x = 5,437.22

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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.