Home / 6,621.38-9,137.34-3,637.20

Finding the Fourth Proportional to 6,621.38, 9,137.34 and 3,637.20

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Solution

The fourth proportional to 6,621.38, 9,137.34 and 3,637.20 is: 5,019.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,621.38 : 9,137.34 = 3,637.20 : x
  2. Step 2: Convert to fraction form
    6,621.38/9,137.34 = 3,637.20/x
  3. Step 3: Cross multiply
    6,621.38x = 9,137.34 × 3,637.20
  4. Step 4: Simplify right side
    6,621.38x = 33,234,333.05
  5. Step 5: Solve for x
    x = 33,234,333.05/6,621.38
  6. Step 6: Final answer
    x = 5,019.25

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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.