Home / 6,621.33-9,138.12-3,968.22

Finding the Fourth Proportional to 6,621.33, 9,138.12 and 3,968.22

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Solution

The fourth proportional to 6,621.33, 9,138.12 and 3,968.22 is: 5,476.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.33 : 9,138.12 = 3,968.22 : x
  2. Step 2: Convert to fraction form
    6,621.33/9,138.12 = 3,968.22/x
  3. Step 3: Cross multiply
    6,621.33x = 9,138.12 × 3,968.22
  4. Step 4: Simplify right side
    6,621.33x = 36,262,089.93
  5. Step 5: Solve for x
    x = 36,262,089.93/6,621.33
  6. Step 6: Final answer
    x = 5,476.56

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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.