Home / 3,378.21-4,651.17-2,979.53

Finding the Fourth Proportional to 3,378.21, 4,651.17 and 2,979.53

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Solution

The fourth proportional to 3,378.21, 4,651.17 and 2,979.53 is: 4,102.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.21 : 4,651.17 = 2,979.53 : x
  2. Step 2: Convert to fraction form
    3,378.21/4,651.17 = 2,979.53/x
  3. Step 3: Cross multiply
    3,378.21x = 4,651.17 × 2,979.53
  4. Step 4: Simplify right side
    3,378.21x = 13,858,326.49
  5. Step 5: Solve for x
    x = 13,858,326.49/3,378.21
  6. Step 6: Final answer
    x = 4,102.27

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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.