Home / 6,623.28-9,139.95-3,639.09

Finding the Fourth Proportional to 6,623.28, 9,139.95 and 3,639.09

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Solution

The fourth proportional to 6,623.28, 9,139.95 and 3,639.09 is: 5,021.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,623.28 : 9,139.95 = 3,639.09 : x
  2. Step 2: Convert to fraction form
    6,623.28/9,139.95 = 3,639.09/x
  3. Step 3: Cross multiply
    6,623.28x = 9,139.95 × 3,639.09
  4. Step 4: Simplify right side
    6,623.28x = 33,261,100.65
  5. Step 5: Solve for x
    x = 33,261,100.65/6,623.28
  6. Step 6: Final answer
    x = 5,021.85

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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.