Home / 6,622.97-9,139.89-3,638.99

Finding the Fourth Proportional to 6,622.97, 9,139.89 and 3,638.99

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Solution

The fourth proportional to 6,622.97, 9,139.89 and 3,638.99 is: 5,021.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,622.97 : 9,139.89 = 3,638.99 : x
  2. Step 2: Convert to fraction form
    6,622.97/9,139.89 = 3,638.99/x
  3. Step 3: Cross multiply
    6,622.97x = 9,139.89 × 3,638.99
  4. Step 4: Simplify right side
    6,622.97x = 33,259,922.61
  5. Step 5: Solve for x
    x = 33,259,922.61/6,622.97
  6. Step 6: Final answer
    x = 5,021.91

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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.