Home / 3,378.66-4,664.27-2,121.57

Finding the Fourth Proportional to 3,378.66, 4,664.27 and 2,121.57

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Solution

The fourth proportional to 3,378.66, 4,664.27 and 2,121.57 is: 2,928.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.66 : 4,664.27 = 2,121.57 : x
  2. Step 2: Convert to fraction form
    3,378.66/4,664.27 = 2,121.57/x
  3. Step 3: Cross multiply
    3,378.66x = 4,664.27 × 2,121.57
  4. Step 4: Simplify right side
    3,378.66x = 9,895,564.70
  5. Step 5: Solve for x
    x = 9,895,564.70/3,378.66
  6. Step 6: Final answer
    x = 2,928.84

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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.