Home / 3,329.09-4,989.78-1,378.88

Finding the Fourth Proportional to 3,329.09, 4,989.78 and 1,378.88

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Solution

The fourth proportional to 3,329.09, 4,989.78 and 1,378.88 is: 2,066.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,329.09 : 4,989.78 = 1,378.88 : x
  2. Step 2: Convert to fraction form
    3,329.09/4,989.78 = 1,378.88/x
  3. Step 3: Cross multiply
    3,329.09x = 4,989.78 × 1,378.88
  4. Step 4: Simplify right side
    3,329.09x = 6,880,282.90
  5. Step 5: Solve for x
    x = 6,880,282.90/3,329.09
  6. Step 6: Final answer
    x = 2,066.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.