Home / 6,622.09-9,138.22-3,637.78

Finding the Fourth Proportional to 6,622.09, 9,138.22 and 3,637.78

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Solution

The fourth proportional to 6,622.09, 9,138.22 and 3,637.78 is: 5,019.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.09 : 9,138.22 = 3,637.78 : x
  2. Step 2: Convert to fraction form
    6,622.09/9,138.22 = 3,637.78/x
  3. Step 3: Cross multiply
    6,622.09x = 9,138.22 × 3,637.78
  4. Step 4: Simplify right side
    6,622.09x = 33,242,833.95
  5. Step 5: Solve for x
    x = 33,242,833.95/6,622.09
  6. Step 6: Final answer
    x = 5,019.99

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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.