Home / 3,680.23-5,078.82-2,188.95

Finding the Fourth Proportional to 3,680.23, 5,078.82 and 2,188.95

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Solution

The fourth proportional to 3,680.23, 5,078.82 and 2,188.95 is: 3,020.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,680.23 : 5,078.82 = 2,188.95 : x
  2. Step 2: Convert to fraction form
    3,680.23/5,078.82 = 2,188.95/x
  3. Step 3: Cross multiply
    3,680.23x = 5,078.82 × 2,188.95
  4. Step 4: Simplify right side
    3,680.23x = 11,117,283.04
  5. Step 5: Solve for x
    x = 11,117,283.04/3,680.23
  6. Step 6: Final answer
    x = 3,020.81

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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.