Home / 3,933.39-5,429.79-2,989.35

Finding the Fourth Proportional to 3,933.39, 5,429.79 and 2,989.35

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Solution

The fourth proportional to 3,933.39, 5,429.79 and 2,989.35 is: 4,126.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,933.39 : 5,429.79 = 2,989.35 : x
  2. Step 2: Convert to fraction form
    3,933.39/5,429.79 = 2,989.35/x
  3. Step 3: Cross multiply
    3,933.39x = 5,429.79 × 2,989.35
  4. Step 4: Simplify right side
    3,933.39x = 16,231,542.74
  5. Step 5: Solve for x
    x = 16,231,542.74/3,933.39
  6. Step 6: Final answer
    x = 4,126.60

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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.