Home / 6,621.72-9,138.06-3,826.68

Finding the Fourth Proportional to 6,621.72, 9,138.06 and 3,826.68

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Solution

The fourth proportional to 6,621.72, 9,138.06 and 3,826.68 is: 5,280.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.72 : 9,138.06 = 3,826.68 : x
  2. Step 2: Convert to fraction form
    6,621.72/9,138.06 = 3,826.68/x
  3. Step 3: Cross multiply
    6,621.72x = 9,138.06 × 3,826.68
  4. Step 4: Simplify right side
    6,621.72x = 34,968,431.44
  5. Step 5: Solve for x
    x = 34,968,431.44/6,621.72
  6. Step 6: Final answer
    x = 5,280.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.