Home / 3,205.49-4,416.71-2,155.73

Finding the Fourth Proportional to 3,205.49, 4,416.71 and 2,155.73

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Solution

The fourth proportional to 3,205.49, 4,416.71 and 2,155.73 is: 2,970.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,205.49 : 4,416.71 = 2,155.73 : x
  2. Step 2: Convert to fraction form
    3,205.49/4,416.71 = 2,155.73/x
  3. Step 3: Cross multiply
    3,205.49x = 4,416.71 × 2,155.73
  4. Step 4: Simplify right side
    3,205.49x = 9,521,201.39
  5. Step 5: Solve for x
    x = 9,521,201.39/3,205.49
  6. Step 6: Final answer
    x = 2,970.28

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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.