Home / 3,180.54-4,390.86-2,133.18

Finding the Fourth Proportional to 3,180.54, 4,390.86 and 2,133.18

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Solution

The fourth proportional to 3,180.54, 4,390.86 and 2,133.18 is: 2,944.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.54 : 4,390.86 = 2,133.18 : x
  2. Step 2: Convert to fraction form
    3,180.54/4,390.86 = 2,133.18/x
  3. Step 3: Cross multiply
    3,180.54x = 4,390.86 × 2,133.18
  4. Step 4: Simplify right side
    3,180.54x = 9,366,494.73
  5. Step 5: Solve for x
    x = 9,366,494.73/3,180.54
  6. Step 6: Final answer
    x = 2,944.94

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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.