Home / 3,299.28-4,553.64-2,121.84

Finding the Fourth Proportional to 3,299.28, 4,553.64 and 2,121.84

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Solution

The fourth proportional to 3,299.28, 4,553.64 and 2,121.84 is: 2,928.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,299.28 : 4,553.64 = 2,121.84 : x
  2. Step 2: Convert to fraction form
    3,299.28/4,553.64 = 2,121.84/x
  3. Step 3: Cross multiply
    3,299.28x = 4,553.64 × 2,121.84
  4. Step 4: Simplify right side
    3,299.28x = 9,662,095.50
  5. Step 5: Solve for x
    x = 9,662,095.50/3,299.28
  6. Step 6: Final answer
    x = 2,928.55

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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.